This article is over 5 years old and may contain outdated information.

Wildlife

Get to know Canada’s shark species

Meet some of the incredible toothy predators swimming off our shores

  • Published Oct 18, 2017
  • Updated Jul 27, 2022
  • 697 words
  • 3 minutes
tiger shark Expand Image
Advertisement
Advertisement
Advertisement

As a shark biologist and science communicator, I love to talk with my friends and neighbours about my work. I recently moved from Miami to Vancouver to start a research project investigating Canadian shark fisheries. In addition to getting used to life in a different country, I’ve had to significantly adjust my public outreach strategy.

When I lived in Florida, everyone knew about the sharks off the coast, though there were many misconceptions. However, when I’ve told my new Canadian friends what I do for a living, many have been very confused about why I moved here. I’ve been assured by many people that there are no sharks in Canada.

This beautiful country has over 3,400 kilometres of coastline bordering the Atlantic, Pacific, and Arctic oceans; of course there are sharks here! In fact, according to a 2010 research paper by colleagues of mine, there are 28 different species of shark that spend some or all of their time off Canadian coastlines. Canadian sharks range widely in size, shape, colour, and behaviour, and include some of the coolest sharks on the planet. We have glow-in-the-dark deepwater lanternsharks. We have thresher sharks, whose long tails are used to whip and stun prey. We have sand tiger sharks, a species best known for eating its siblings while still in the womb. Canadian sharks also include the salmon shark and porbeagle shark, some of the very few fish species that are able to regulate their internal body temperature. The great white shark, made (in)famous by Jaws, is found here, too.

The world’s second-largest shark, the 10-metre-long, filter-feeding basking shark, lives in Canadian waters. Like many Canadians, these sharks head south for the winter. Unfortunately, these gentle giants are in trouble in our waters, and according to Fisheries and Oceans Canada, only 12 were seen between 1996 and 2009. In 2010, the Pacific population of basking sharks became the first marine fish listed as Endangered under the Species at Risk Act. These fish were listed as “destructive pests” in the 1950s and 1960s, and were the subject of a federal government eradication program. Fortunately, populations are starting to recover, but the DFO estimates that it could take 200 years — longer than Canada has even existed — for populations to fully recover. 

Canadian sharks include not only shark species commonly thought of as cold water dwellers, such as the blue shark, but also tropical species like tiger sharks, which swim off the coast of Canada during their long migrations. These sharks are infamous for eating just about anything they come across, and are sometimes known as the rubbish bins of the sea. A recent South African study found that this species eats such diverse prey as penguins, porpoises, and porcupines

The Greenland shark, one of my favourite species, lives in the Canadian arctic. This shark, which has been documented eating polar bears and reindeer, may live for up to 400 years. A Greenland shark born on the day of Canadian Confederation 150 years ago may not yet be a reproductively mature adult. I’d be remiss if I didn’t also mention that these animals are the slowest-swimming fish ever recorded, and that most of them are blind because of an eye parasite! 

Finally, Canada is home to the Pacific spiny dogfish. In 2011, the Marine Stewardship Council certified the British Columbia spiny dogfish fishery as sustainable. This was the first shark fishery in the world to be certified as sustainable seafood by the influential MSC. Speaking of Canadian shark fisheries, although some of my neighbours have assured me that shark fishing is illegal here, Canada is actually one of the world’s top shark fishing nations in terms of both landings and international exports. While there are success stories of sustainable management, there are also significant conservation concerns involving Canadian shark fisheries, which is the focus of my current research.

When thinking about Canada’s rich natural history, there is much to be proud of. Just please don’t forget the sharks!

Advertisement

Help us tell Canada’s story

You can support Canadian Geographic in 3 ways:

Related Content

Wildlife

Shark tales: Canada’s great whites

As white sharks make their presence known off the coast of Atlantic Canada, researchers and locals want to know: should people be worried? 

  • 3712 words
  • 15 minutes
The spiny dogfish made history when it was certified as the world’s first sustainable shark fishery in 2011

Wildlife

The great green shark hunt 

Can British Columbia’s spiny dogfish make the grade as the world’s first “sustainable” shark fishery?

  • 3319 words
  • 14 minutes

Wildlife

Jawsome: behind the scenes of Canada’s newest great white shark documentary

Korean-Canadian filmmaker Sonya Lee dives deep into the world of great white sharks for the latest documentary from CBC’s The Nature of Things

  • 1781 words
  • 8 minutes

Wildlife

Study finds reef sharks ‘functionally extinct’ from 20 per cent of the world’s reefs

Lead author Aaron MacNeil discusses what this means for coral ecosystems and what Canadians can do to help

  • 1375 words
  • 6 minutes
Advertisement
Advertisement