General Aquarium

Keeping Our Oceans Happy & Healthy

As someone that works at an Aquarium, I often get the comment, “Well, you must not eat seafood.” This is usually followed by a chuckle. My response? “I love to eat seafood. BUT when I do, I make sure the seafood I am consuming is sustainable.”

Our world’s oceans are essential to life on earth.

Covering approximately 70% of the planet, our oceans maintain the earth as we know it by regulating the climate, supplying oxygen to the atmosphere and by maintaining the lives of the millions of organisms that make up the complex aquatic food web. Its essential functions go beyond the deep blue, as the ocean also works to support life on dry land. This includes providing us humans with an important protein source – fish!

However, our oceans are in danger.

One of the biggest threats that our oceans face today is overfishing.

In the past 50 years, global consumption of seafood has nearly doubled. Improvements in technology have allowed us to remove fish at alarmingly fast rates, with much less effort. Today, roughly 90% of the world’s fish stocks are fully fished or overfished.

The amount of seafood we consume is not the only issue. To add to the issue, what we remove and how we remove these species from the water are also an issue. Certain fishing and farming practices can have negative impacts on critical marine or aquatic habitats. An estimated 40% of what is caught in commercial fisheries is unintended catch, or bycatch, and is often tossed back overboard. Bycatch species can range from small organisms to those that are much larger, from sharks, to rays, and even turtles.

Unfortunately, the majority of these animals do not always survive, even if they are returned to the water. It is important to understand how your seafood has been harvested as some fishing gear types can increase the likelihood and amount of bycatch.


But despite these issues, you CAN help to make a difference!

One way to do so is, like myself, opting to eat only sustainable seafood.

Sustainable seafood can be defined as species that are caught or farmed in a way that ensures the long-term health and stability of that species, as well as the greater marine ecosystem.

I’ll admit, ensuring you are making a healthy and sustainable choice for our oceans when it comes to buying seafood can be difficult. Without the proper information about where your food is coming from, how can you know for sure that you are purchasing sustainable seafood? Luckily, there are resources to help you make those important decisions.

Next time you are at a restaurant or grocery store, look for the Ocean Wise symbol on seafood items.

The Ocean Wise symbol next to a seafood item is your assurance of an ocean-friendly seafood choice, ensuring the health of our oceans for generations to come.

Interested in learning more about sustainable seafood, and tasting what our oceans and lakes have to offer? Check out Ocean Wise Chowder Chowdown. Taste delectable original chowders, local craft beer as top Ocean Wise chefs compete head-to-head for the title of 2017 Ocean Wise Chowder Chowdown Champion, all in support of sustainable seafood.

Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Comment below for the chance for your question to be featured in our monthly Q&A post!

I Don’t Think You’re Ready for This Jelly

One of the most photographed animals at the Aquarium, the Pacific sea nettles, are easily one of the most bizarre creatures on display. These brainless, eye-less creatures are almost 95% water! With no eyes to help detect their food, they rely on light-sensing organs.

Did you know that tomorrow, November 3, is World Jellyfish Day?!

To celebrate, today on Deep Sea Diary, we are going to interview one of our Aquarists, Eric.

Eric is our resident “jelly man.” He has been working with Ripley’s Aquarium of Canada since 2014 and has always been a vital part of our jellyfish husbandry team. He currently takes care of our Pacific sea nettles, moon jellies and works with culturing live foods such as zooplankton.

Eric, aka Jelly Man, is an aquarist at Ripley’s Aquarium of Canada.

How did you get involved working with jellyfish?

“It all started with an internship at an aquarium. A lot of my daily tasks required me to work with jellyfish. One day, my supervisor was showing me how to feed sea nettles and he got stung. I asked him what it felt like to be stung and he responded with “Oh, I don’t feel it anymore.” That really lowered my fear of working with jellyfish – I actually got excited and curious about getting stung myself!”

What does it feel like to get stung?

It ranges from an irritating itch to individual pins and needles poking you. The worst one I ever got felt like getting a scratch and then cleaning it with rubbing alcohol for hours.

Moon jellies can grow up to 40cm in diameter and can be found in the Atlantic Ocean. These jellyfish are capable of life cycle reversal, where individuals grow younger instead of older! At Ripley’s Aquarium of Canada, we grow our own moon jellies to display in our Life Cycles Exhibit.

What is your favourite part about working with jellyfish?

I think my favourite part is knowing that you can get them super big and beautiful by doing some of the simplest things like feeding them and keeping their exhibit clean. Also cultivating jellyfish is still very new in the aquarium world and being able to learn so much about jellyfish and their niche always keeps me interested.

How is caring for jellyfish different than caring for fish?

Besides the fact that their tanks are round, not square, they also are an animal that can’t communicate with body language or anything. They can respond with certain behaviours such as retracting their arms from water turbulence or pulsing when they encounter a current but otherwise they are animals that most people don’t understand and I enjoy that!

Upside down jellies lie on the bottom of the ocean (upside down) to expose their algae covered arms to the sun. When disturbed, these jellyfish will swim off the bottom of the ocean or excrete stinging cells contained within mucus as a defence.

What is your favourite jellyfish?

Carukia barnesi, also known as Irukandji jellyfish. They are the about size of your pinky finger and can deliver incredibly painful, venomous stings which can result in a powerful sense of impending doom and even death!

If you want to learn all about jellyfish, their care, what they eat and how they work, check out our blog post Jellyfish 101.

Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Comment below for the chance for your question to be featured in our monthly Q&A post!

Drop Us a Line – October Q&A

You ask, we answer! Welcome to Deep Sea Diary’s monthly Q&A – a great way to connect with Aquarium experts as you fish for more information about all things Ripley’s.


Matthew asked…

Q: How much do the sharks in Dangerous Lagoon eat, and when do you feed them?

A: On average, the Husbandry team prepares around 800 pounds (360 kilograms) of food for the animals EVERY WEEK! This is about a quarter of what is eaten by Aquarium guests every week in the cafe. The food comes from a restaurant supplier so its human consumption grade. About 65% of that food feeds the sharks, stingrays, sawfish, green sea turtles and other small fish that live in the Dangerous Lagoon. These feeds occur on Tuesday and Thursdays. Find the times here. 

Learn more about how we feed the animals in the Dangerous Lagoon here.


Diane asked…

Q: Where does the water in the Aquarium come from?

A: All of the water in the Aquarium comes from city water. However, we have a special process to remove added chlorine, fluoride and ammonia. From there, we can do whatever we want with the pure water. For the freshwater tanks, that’s essentially nothing. For saltwater tanks, we added a tremendous amount of salt. This is done in our salt mixing room! Ripley’s Aquarium of Canada has our own secret salt water recipe, mixing about 15 different types of salts and minerals! The most common salt is sodium chloride, or what most people know as table salt. Once this water is fully mixed and passes the water chemistry tests, it is moved to another holding basin where it can be sent to any system that requires it.

In total, we are able to recycle about 99% if the water we filter. In fact, we’ll actually lose more water each day from human sources (i.e. washrooms, cafe, etc.) than we will from the actual tanks.

Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Email us at for the chance for your question to be featured in our monthly Q&A post!

Recap: International Sawfish Day

On Tuesday, October 17, Ripley’s Aquarium of Canada joined several aquariums across North Americain celebrating the first annual International Sawfish Day!

Did you know? There are only five species of sawfish in the world – Dwarf, Knifetooth, Smalltooth, Largetooth and Green sawfish. The largest being the smalltooth sawfish, which can grow up to 25 feet!

One of the ways that Ripley’s Aquarium of Canada celebrated these incredible species with TWO Facebook LIVE events! If you didn’t get the chance to “tuna” in on Tuesday, check them out below.

First up, our Marketing Coordinator Sarah joined our Senior Aquarist Ka in the Dangerous Lagoon Tunnel to discuss all things sawfish. During their chat, they were even joined by a very special guest – our male green sawfish! The male and female green sawfish that call Ripley’s Aquarium of Canada home can often be seen lying on the tunnel, giving guests the perfect view.


During the second Facebook LIVE, Sarah joined one of our Lead Educators, Danielle, behind the scenes to give viewers a look at how we feed the animals in the Dangerous Lagoon, including the two resident sawfish.

Danielle answered some great questions – including the purpose of the sawfish’s rostum, how they are able to eat and even what they are fed here at the Aquarium.


One important topic that both Kat and Danielle discussed was the many threats that face these animals, and how we can help.

The sawfish gets their name from their long rostrum, or “saw”. Due to this unique morphology, combined with slow growth, all five species of sawfish are listed as endangered or critically endangered by the IUCN (International Union for Conservation of Nature).

Their rostrum often causes entanglement in fishing nets and other marine debris and can often lead to targeted trophy hunting. They are also continuously hunted for their meat, liver oil and fins for the shark fin trade. And, as a species commonly found in shallow coastal waters, their habitat is at risk due to development.

Even though we may be located thousands of miles from the nearest sawfish habitat, there are many ways that we can help. Most importantly, it starts with education and creating awareness. By participating in activities such as International Sawfish Day, we can create awareness of these animals and their importance in the ocean and threats they face.  We hope that you enjoying “tuna”ing in to our Facebook LIVE events, and they you will share them with your friends so that they too can build a connection with these magnificent ocean creatures.


Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Comment below for the chance for your question to be featured in our monthly Q&A post!

Celebrating the Sawfish

Next Tuesday, October 17th is the first annual International Sawfish Day!

There are only five species of sawfish in the world – Dwarf, Knifetooth, Smalltooth, Largetooth and Green sawfish. The largest being the smalltooth sawfish, which can grow up to 25 feet!

Sawfish are considered the most threatened group of Elasmobranchs (sharks and rays) in the world. Here at Ripley’s Aquarium of Canada, we have two resident green sawfish, who live in the Dangerous Lagoon exhibit.

Green sawfish are more closely related to stingrays than sharks. They are a modified ray with a shark-like body, and can grow over 15 feet in length! Commonly mistaken for swordfish, sawfish are elasmobranchs meaning their skeleton is made of cartilage (like our ears and nose), and not bone. Our female green sawfish is easily our largest animal at the Aquarium, weighing in at over 400 pounds over 14 feet long from end to end! (Don’t know which one is female, and which one is male? When viewing the sawfish from within the Dangerous Lagoon tunnel, look for the presence of claspers. These male reproductive organs are modifications of the pelvic fins and are located on the inner margin of the pelvic fins.)

The rostrum, or “saw,” is what makes these animals so unique!

A sawfish’s rostrum is long and narrow, edged with teeth and can comprise up to 30% of their length! Depending on the species, the rostum is comprised on 16-37 pairs of teeth on either side. Once lost, these teeth will never grow back.Contrary to popular belief, the saw is not used to saw into other animals. An efficient weapon covered in electroreceptors, called ampullae of Lorenzini, the rostrum allows sawfish to detect their prey in the substrate, before taking lateral swipes to stun or kill.

With all five species listed as endangered or critically endangered by the IUCN, the first annual International Sawfish Day couldn’t have come at a better time!

Sawfish are a vulnerable species due to their unique morphology and slow growth. Their rostrum often causes entanglement in fishing nets and other marine debris and can often lead to targeted trophy hunting. They are also continuously hunted for their meat, liver oil and fins for the shark fin trade. And, as a species commonly found in shallow coastal waters, their habitat is at risk due to development.


But, you can help!

One way to do so is by joining Ripley’s Aquarium of Canada on Facebook! On October 17, we will be celebrating International Sawfish Day with TWO Facebook LIVE events – 8:45am & 1:00pm (topics listed below).

8:45am – “All About Sawfish” Facebook LIVE with our Senior Aquarist Kat!

1:00pm – “Sawfish Feed” Facebook LIVE with our Lead Educator Danielle!

We hope to ‘sea’ you there!


Is there something that you’ve always wanted to know about sawfish? Leave your sawfish questions below (before Monday, October 16) for your chance to WIN a sawfish stuffed animal, two general admission tickets and a keychain, AND have them answered during our Facebook LIVE on International Sawfish Day!

Celebrating Coastal Cleanup Day

In September, Ripley’s Aquarium of Canada’s Blue Team and over 50 members of the local community joined forces to celebrate Coastal Cleanup Day, cleaning Lake Ontario’s shoreline at the Humber Marshes.

Every year thousands of tons of garbage enter our oceans, harming wildlife, humans, and impacting the livelihood of those who work on the ocean.

Even though Toronto is located thousands of miles from the nearest ocean, the problem begins with us. Rivers, lakes, streams, storm drains and beaches are all connected, so litter at your shoreline can be transported far away from where it began.

Regardless of the origin, litter in the environment can have devastating consequences for wildlife. Animals mistake litter for food or become entangled in single-use plastic bags, rope and string. Litter can transport invasive species, or introduce dangerous toxins into an ecosystem. Plastic litter can break down into smaller pieces that are impossible to pick up and never truly disappear.

Over the course of the two-hour September cleanup, Aquarium staff and community members collected over 52 kg (113 lbs) of waste and recycling! The worst offenders? Cigarette butts, plastic bottle caps and small pieces of foam (less than 2.5 cm in diameter).

So, what do we do with that 52 kg of waste collected?

Waste collected during a Ripley’s Aquarium of Canada shoreline cleanup goes in one of three streams – trash, recycling and cigarette butts. The trash and recycling are collected by the City of Toronto, whereas the cigarette butts are sent to a recycling program called TerraCycle. Once collected in this program, the butts and packaging are separated by composition and melted into hard plastic that can be remolded to make new recycled industrial products, such as plastic pallets. The ash and tobacco are separated out and composted in a specialized process.

Coastal Cleanup Day was established by the Ocean Conservancy, an organization that work to help protect the ocean from the challenges it faces every year. The important day encourages us to get out to our beaches and help to limit this problem by cleaning up the garbage that has washed up on shore, and that left by visitors every day.

Twice a year, Ripley’s Aquarium of Canada participates in a shoreline cleanup to help clean Lake Ontario at the mouth of the Humber River. This area, known as the Humber Marshes, is one of the few remaining river mouth marshes in Toronto. As part of Toronto’s largest watershed, the extensive marshes provide an important breeding habitat for ducks, turtles and fish, and are a significant corridor for migratory song birds and monarch butterflies. More than 60 species of fish live in the river including such sport fish as trout, pike and salmon.

A BIG ‘tank’ you to everyone that participated! Interested in participating in our next Shoreline cleanup in spring 2018? Subscribe to the Aquarium newsletter (located at the bottom of our website, here) for more information.

Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Email us at for the chance for your question to be featured in our monthly Q&A post!


Drop Us a Line – September Q&A

You ask, we answer! Welcome to Deep Sea Diary’s monthly Q&A – a great way to connect with Aquarium experts as you fish for more information about all things Ripley’s.


Anna asked,

Q: How many types of fishes call Ripley’s Aquarium of Canada home?

A: Ripley’s Aquarium of Canada is home to over 16,000 fish and invertebrates, as well as two green sea turtles. Nine galleries showcase a cross section of saltwater and freshwater environments from around the world – starting with species from Toronto’s backyard, the Great Lakes basin. The Dangerous Lagoon is our largest exhibit with 2.9 million liters of salt water, and Rainbow Reef is the most diverse, with over 100 different types of tropical fish.

Learn how we take care of the animals in our largest exhibit, the Dangerous Lagoon, here.

Patricia asked,

Q: What is the most common place that is photographed at the Aquarium?

A: One of the most iconic and photographed places inside Ripley’s Aquarium of Canada is Planet Jellies, specifically the wall of sea nettles. The giant floor to ceiling kriesel stops everyone in their tracks, and is the perfect location for a selfie or silhouette photo against the stunning blues, purples and pinks.

We want to see your Aquarium photos! When sharing your photos of Ripley’s Aquarium of Canada, be sure to tag us @RipleysAquaCA and use our hashtag, #RipleysAquaCA.

Learn more about how to capture the perfect photo at the Aquarium here.


Is there something you’ve always wanted to know about Ripley’s Aquarium of Canada? Drop us a line in the comments below for the chance to be featured in our monthly Q&A !

What is AZA?

Conserve. Educate. Inspire.

At Ripley’s Aquarium of Canada, our mission is to provide a world class experience that will foster education, conservation and research, while providing fun and entertainment for all ages.

One way that we do this is by maintaining accreditation with the Association of Zoos and Aquariums (AZA).

AZA is a non-profit organization dedicated to the advancement of zoos and aquariums in the areas of conservation, education, science, and recreation. AZA has been the primary accrediting body for zoos and aquariums for over 40 years, and represents more than 230 institutions in the United States, Canada and internationally.

These accredited institutions meet the highest standards in animal care and provide a fun, safe, and educational family experience. Collectively drawing more than 180 million visitors every year and dedicating millions of dollars to support scientific research, conservation and education programs, accredited zoos and aquariums play an important role in connecting their visitors to the natural world.

Simply put, AZA accreditation is considered to be the “best” accreditation a zoo or aquarium can hold, due to the incredibly high standards and stringent requirements.

In September 2015, less than two years after opening, Ripley’s Aquarium of Canada was granted accreditation by AZA’s independent Accreditation Commission.

To achieve accreditation, the Aquarium underwent a thorough review to ensure it has and will continue to meet rising standards, which include animal care, veterinary programs, conservation, education, and safety. In addition to a very lengthy written application, the Aquarium also took part in an intense multiple-day on-site inspection, which involved outside leaders in the zoo and aquarium industry observing all aspects of the institution’s operation. Over the course of three days, the inspectors observed the Aquarium’s animal care, safety for visitors, staff and animals, educational programs, conservation efforts, veterinary programs, financial stability, risk management, visitor services, and more.  The accreditation process then concluded with an in-person hearing in front of the Accreditation Commission, at which time accreditation was presented.

Accreditation doesn’t stop there. AZA member institutions are required to repeat the entire accreditation process every five years to ensure that they are upholding the continuously evolving standards, incorporating best modern zoological practices in animal welfare and management, and embracing modern AZA philosophies.


So what does this mean for Ripley’s Aquarium of Canada?

Accreditation certifies that Ripley’s meets all mandatory and professional standards for animal welfare, management, veterinary care, behavioural enrichment, nutrition, staff training and beyond. This recognition ensure that the animals you visit receive excellent care every day.

“The Association of Zoos and Aquariums accredits only those zoos and aquariums that meet the highest standards and are proven leaders in the care and conservation of wildlife as well as education,” said former AZA President and CEO Jim Maddy. “The community can take great pride in knowing that Ripley’s Aquarium of Canada is dedicated to inspiring the next generation of conservationists.”

The Association of Zoos and Aquariums and their member institutions are leaders in saving species, and your link to helping animals all over the world. So, the next time you visit a zoo or aquarium look for the AZA accreditation logo as your assurance that you are supporting a facility dedicated to providing excellent care for animals, a great experience for you and a better future for all living things.

Ripley’s Aquarium of Canada is extremely proud to hold this accreditation with the Association of Zoos and Aquariums! You can find Ripley’s Aquarium of Canada’s accreditation plaque proudly displayed at Guest Services. Visit us today to experience one of our dive shows and aquarist talks, and to learn more about our conservation programs and animal welfare practices.


Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Drop us a line in the comments below for the chance to be featured in our monthly Q&A post!

Jellyfish 101

What is a jellyfish, and how do you take care of them?! A question on every visitor’s mind.

Being neither fish nor delicious fruit preserve, the name “jellyfish” is a bit of a misnomer.  Typically referred to as sea jellies, or just “jellies”, these animals belong to a larger collection of animals referred to as Cnidaria, and are more closely related to sea anemones and corals than they are to actual fish. They evolved over 580 million years ago when their ancestors laid claim to the planktonic, venomous marine predator niche of the food chain. And they’ve held onto it firmly ever since.

That being said, jellies are little more than a set of floating stomachs with stinging arms, a simple network of nerves and a reproductive system – so how much work can really go into their care? Let’s find out!

First, you just need to simulate the vast and fathomless open ocean in a relatively small space. How hard could it be?!

In order to recreate a jelly’s natural environment, we have to build a tank that ensures they aren’t exposed to powerful currents, walls, corners, edges, holes, any solid objects whatsoever, excreted waste, old food, microscopic organisms, other jellies – you get the idea. Sea jellies’ health will rapidly deteriorate if they have prolonged contact with anything solid. So, in terms of build, most jellyfish tanks are rounded and have painstakingly balanced water flow to keep jellies suspended off of the walls and floor. Similar to the ceiling moon jelly tank (pictured below) in our Planet Jellies gallery.


Second, you need to provide a constant, even supply of a variety of foods all day, every day.

Jellies are opportunistic carnivores. In the wild, this means they are continually pulling food out of the water. At the Aquarium, this means that we have to provide a near-constant supply of things for them to catch, a feat managed by our behind-the-scenes “live food” cultures and specially blended “shakes” made up of frozen krill, fish eggs, and other goodies. Delicious!

Each day, one aquarist is responsible for preparing the population of freshly hatched brine shrimp that will be fed out, via a low drip, to all of our tanks. Just as much work goes into keeping up our live foods as it does to care for any of our exhibit tanks; they have to be fed, their tanks have to be cleaned, and their health needs to be closely monitored to ensure our animals are getting the highest quality food possible.

Third, you need… well, jellyfish.

Jellies reproduce by broadcast spawning, which means the males and females release sperm and eggs into the water. These gametes meet up and create a small grain-like “planula” that will find a nice place to settle down into a polyp, which resembles a small sea anemone. These polyps will break off into several flower-like ephyrae, which eventually transform into medusae – the final life stage that most people recognize as “jellyfish”.

Perforated plates or mesh left in tanks containing adult jellies are ideal settling grounds for polyps, so our cultures behind the scenes and on-exhibit are always growing and changing! (When touring the Aquarium, be sure to check out the life cycle display in Planet Jellies.)

Finally, all that’s left is keeping up with the cnidarians.

Day to day maintenance of our jelly tanks is an involved and convoluted dance, since any interaction between cleaning equipment and jelly could result in injury. At the same time, our jellies also need their tanks to be kept clear of algae and other microscopic organisms that could damage them. To help combat this, once every few months each exhibit will have its inhabitants moved out to a holding tank overnight, and a diver will either enter the tank to scrub down all the surfaces, or the tank will be bleached, emptied, and refilled with fresh salt water.

Though it can be a bit disorienting with the ever-changing lights on our jellyfish exhibits, pay attention the next time you swim by and you might be able to see how the water flows around our tanks, spot some speck-sized brine shrimp zooming around, or even see some brand new baby ephyrae!


Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Drop us a line in the comments below for the chance to be featured in our monthly Q&A post!

Back to School

It’s September!  This means that it’s time for everybody’s favourite time of the year – back to school!

Okay, so, maybe not everybody loves back-to-school time.  But for a lot of our fish, their “school” is the happiest and safest part of their lives.

A school of fish is most accurately defined as: a group of fish that swim together in the same direction. Fish that group for social purposes are technically shoaling, and groups of fish often switch back and forth between both.

For something that appears so simple, it’s actually an incredibly complex behaviour. Scientists don’t fully understand the ins and outs of it yet, but the fact that it’s so common means it must be advantageous.  Schooling can increase feeding efficiency, make it easier to find a mate, and let the group as a whole navigate better than an individual.  Some scientists believe that traveling in a school may reduce drag or resistance, similar to a flock of birds.  It’s also quite an effective predator-avoidance technique – safety in numbers, right?  Schooling behaviour can confuse hunters, and lower individual risk of predation.

One of the flashiest exhibits at Ripley’s Aquarium of Canada is the alewife exhibit, located at the entrance to the Canadian Waters gallery.

In-house, it’s referred to simply as “Schooling”, and it’s easy to see why.  This is a monospecific exhibit, meaning it has only one kind of animal.  Alewives are anadromous, which means that in the wild, they are born in freshwater and live most of their lives in the ocean (sort of like salmon).  They’re close cousins of herring, and there’s some evidence that they communicate with farts!  But the first thing you’ll notice is that it’s a huge group of animals, all swimming together.  How many fish do you think there are in there?  Go on, take a guess.

Some fish, like alewives, are what we call obligate shoalers. This means that they spend their entire lives in a group.  With obligate shoalers, being alone or in a too-small group can cause a measurable stress response.  That’s part of the reason why we have such a large school here at the Aquarium – they won’t be happy or healthy otherwise.  If you’re looking at the alewife exhibit, watch out for any that get separated from the main group.  They zoom back in in quite a hurry!  You’ll be able to see the school swimming together against the current in the exhibit, and moving up and down in the water.  If you’re lucky, you might get to see a feeding, when they’ll all rocket to the surface together.  These fish usually have a very fast response time during feeds.  Many eyes mean someone is likely to spot the food as soon as it goes in.

While the alewives are certainly an obvious example, make sure to look for schooling and shoaling behaviour in the other exhibits as well!

Our Swarm: Nature by Numbers exhibit has more information about group behaviours in animals, and lots of other examples of animals that swarm, shoal, and school together. Make sure to check it out!

Oh, and to answer the question above? We have almost 7000 individuals in our alewife school!


Have a question about the Aquarium, or something you would like to see on Deep Sea Diary? Drop us a line in the comments below for the chance to be featured in our monthly Q&A post!