My favorite mammal is a dolphin! There are so many kinds of dolphins that are widely distributed around the world!
Fun! I once seen a pack of porpoises while boating. I think they're in the same family as dolphins?  
Yes they are! There are actually 40 species of dolphins to be exact!
Wow, have you seen many different kinds?
Personally no, not close up, which is odd considering I live in Florida and that dolphins can range from the size of relatively small to the size of a killer whale!
What? I had no idea they could get that big. Do you know if they can be aggressive? You always heard about dolphins being friendly.
, in that the males are larger than females. They have streamlined bodies and two limbs that are modified into flippers. Though not quite as flexible as seals, some dolphins can travel at . Dolphins use their conical shaped teeth to capture fast moving prey. They have well-developed hearing which is adapted for both air and water and is so well developed that some can survive even if they are blind. Some species are well adapted for diving to great depths. They have a layer of fat, or blubber, under
Oceanic dolphin
Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea. Thirty extant species are described. They include several big species whose common names contain "whale" rather than "dolphin", such as the killer whale and the pilot whales. Delphinidae is a family within the superfamily Delphinoidea, which also includes the porpoises (Phocoenidae) and the Monodontidae (beluga whale and narwhal). River dolphins are relatives of the Delphinoidea.
Oceanic dolphins range in size from the -long and Maui