Sharks have played a vital role in maintaining healthy oceans for hundreds of millions of years as a top predator. More than 450 species of sharks cruise the world’s oceans, ranging in size from 8 inches to a whopping 40 feet long. But today, nearly one in four sharks and their relatives are threatened with extinction. A major cause is the demand for shark fins. Every year, fins from as many as 73 million sharks end up in the global fin trade.
Learn fun facts and how you can help your favorite sharks – from great white sharks to hammerhead sharks – by clicking a species below.
The goblin shark is a fascinating species that lives in the open ocean from near the surface down to depths of at least 4265 feet (1300 m). Like many species with a deep-sea affinity, scientists believe goblin sharks only come near the surface at night and spend most of their lives in the dark. The … Read more
The cookiecutter shark is one of the most interesting sharks in the ocean, and it never grows bigger than 18-20 inches (~50 cm). It gets its common name from its feeding strategy of biting off small chunks of much larger animals. This species is small and lives much of its life in the deep water … Read more
The bull shark is a predatory species that lives in coastal seas and is the shark with the best ability to move into freshwaters – particularly large, coastal rivers and lakes. They are able to move back and forth between saltwater and freshwater with ease. This behavior brings them into more contact with humans than … Read more
The barndoor skate is one of the largest skates in the world. Skates are closely related to the rays and more distantly related to sharks. The skates are the most diverse lineage of the cartilaginous fishes (sharks, skates, and rays). The term ‘cartilaginous fishes’ refers to the fact that these groups do not have true … Read more
The tiger shark gets its name from the characteristic vertical bars that cover the sides of its body. Though these bars fade slightly as individuals reach adulthood, they are very noticeable in juveniles and at least party visible throughout the lifetime. Reaching lengths of at least 18 feet (5.5 m) and 2000 pounds (nearly a … Read more
Reaching widths of nearly 11 feet (over 3 m), the spotted eagle ray is one of the largest eagle rays, with only the mantas growing bigger. Spotted eagle rays, like all eagle rays, are active swimmers and do not lie motionless on the seafloor, like the closely related whiptail stingrays (e.g., southern stingray). They are … Read more
The nurse shark is one of the most commonly observed sharks on coral and rocky reefs of the eastern Pacific Ocean and the eastern and western Atlantic Ocean. Given that nurse sharks give live birth and that individuals (even juveniles) have relatively small home ranges, it is surprising that all individuals across this large, tropical … Read more
The longnose sawshark is one of seven species of sawsharks, noted for their long, flat rostrum (snout) that is covered with several large teeth on its left and right sides giving it the shape of a saw blade. This saw distinguishes sawsharks from all other species of fishes except the sawfishes. Though they look superficially … Read more
The giant manta ray is the largest ray and one of the largest fishes in the world. Reaching widths of up to 29 feet (8.8 m), the manta rays are much larger than any other ray species. For many decades, there was only one known species of manta, but scientists recently divided that species into two: … Read more
The basking shark is the second largest fish in the world, and like the largest fish (the whale shark) and the largest animal (the blue whale), basking sharks are filter feeders that eat tiny, planktonic prey. Reaching lengths of 40 feet (12 m) and resembling predatory sharks in appearance, the basking shark can give an … Read more
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We have already protected nearly 4 million square miles of ocean and innumerable sea life - but there is still more to be done.