Fact : #11

                                                             Dolphins




  • Dolphins are a group of sea mammals closely related to whales.
  • Both animals belong to the order cetacea.
  • To keep their bodies warm, dolphins have evolved a thick layer of blubber.
  • Every few minutes, dolphins have to surface to breath, a blowhole on top of their heads exhales used up air and inhales fresh air.
  • There are over 40 different species of dolphins.
  • Dolphins are fast swimmers, some of them can top 50 kilometers per hour!
  • They move by beating their powerful tails, or flukes, up and down.
  • The dorsal fin and flippers help them steer.
  • Their dominant sense is echolocation.
  • An organ, called a melon, in their foreheads emits a series of clicks.
  • The dolphin senses the return wave though it's jaw
  • Dolphins are also social animals, they do have a sense of humor.
Notes taken from: BrainPOP.com

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