a dorsal fin
a dorsal fin
No they are not. Maybe you were thinking of a manatee.
dolphins are mammals
Monkeys have bigger thumbs.
Sharks are cold-blooded, and are a species of fish; Dolphins are warm-blooded, and are mammals.
Dolphins are marine mammals, zebras are terrestrial mammals. Zebras are herbivores, but dolphins are carnivores. Thus zebras are prey animals and dolphins are predators. But the biggest difference between these to animals is that they do not look the same.
Dolphins are at the top of the food chain. They are carnivores of at least the third or fourth level.
Dolphins typically live from about 17 to about 25 years, with no significant difference between dolphins in captivity and those in the wild.
dolphins can not stay in water long time like most aquatic animals
the difference is sea birds like being raped by dolphins
A manatee is an aquatic mammal, you'd most likely find one in an aquarium or zoo that houses other water mammals like seals, dolphins, etc.
Most fish always have to stay in water. Dolphins come up to the ocean surface for a breath of hair. Dolphins breathe through their blowhole.