The basking shark is a massive fish, second only in size to the whale shark. It can grow up to nearly 40 feet in length. Its body is similar to that of other mackerel sharks, such as the great white, with a long, streamlined body with a tapering snout, and pointed fins. However, unlike other mackerel sharks, its mouth isn’t full of large, sharp teeth.
Basking shark’s teeth are much smaller, and it is often seen swimming with its mouth open wide and yawning, in order to ingest large amounts of water and filter out the tiny organisms it feeds on.