The bottlenose dolphin is probably the most familiar dolphin - but did you know that there are more than 30 dolphin species? Learn more about dolphins by clicking through the articles below.
porpoises, who have flat or spade-shaped teeth.
Dolphins are toothed whales - a group of cetaceans that contains 72 species, about half of which are dolphins. View a list of dolphins and other toothed whales profiled on this site, along with images.
baleen whales, don't have teeth at all.
Have you ever seen an albino whale or dolphin? A pink bottlenose dolphin, aptly named "pinky," was a hot news item after it was spotted in Calcasieu Lake, an inland saltwater estuary in Louisiana. The light-skinned, red-eyed youngster was originally spotted in 2007. Albinism has been documented in 20 cetacean species, including humpback whales, sperm whales, orcas, pilot whales, and bottlenose dolphins. Learn more about what causes this condition.
Have you noticed that orcas in captivity often have a dorsal fin that has fallen over? Why does this happen? Dorsal fins are made of cartilage. A wild orca swims so much that there is nearly constant pressure on each side of the dorsal fin. A captive orca spends more time at the surface, and may have to swim in a circle. Consequently, the tissue in the dorsal fin may atrophy (waste away) and fall over. This may happen to the whale's tail flukes, also.
If you use relative brain size to determine intelligence, then dolphins are second in intelligence only to humans. What does this mean?
Love dolphins? Check out this image gallery of bottlenose dolphins, which includes lots of fascinating facts.
Clearwater Marine Aquarium
Winter, a dolphin who lost her tail when she was 3 months old, is arguably the most famous dolphin since Flipper. Winter's rehabilitation program led to the creation of a prosthetic tail, and the movie Dolphin Tale, which premiered in 2011. Winter lives at the Clearwater Aquarium in Clearwater, Florida, where visitors can see Winter, other bottlenose dolphins, and a number of other animals, including sharks, sea turtles, rays and otters.