Up and down. I've also noticed that mammals, such as whales and dolphins, beat their tail up and down, while fish, like sharks, beat their tail side to side. Hope this helps!
they flip their tail up and down
They use their fins and tail to push through the water.
dolphins are aquatic mammals like seals, and sea lions. They have fins & a strong tail which they use to swim in water.
a tail
No. Unlike fish, whales and dolphins move their fins up and down when swimming. Think of the fin's motion as being related to the spine's motion. A fish's tail fin moves from side to side because it moves its entire spine from side to side when swimming. A whale's tail fin moves up and down because the animal's spine is moving up and down. Whales and dolphins (called Cetaceans in scientific jargon) evolved from land-dwelling mammals. When a mammal walks and especially when it runs, one can see its back moving up and down. The Cetaceans retained this up-and-down spinal movement when they moved from running back to swimming.
Watching dolphins and swimming with dolphins. Or riding dolphins. If you are in swimming and dolphins come around, if you decide that you want to ride one, first make sure it's not a shark.
Dolphins Don't really have a reaction. I study dolphins at marineland fl. and all they really do is when they are giving them a checkup or shot or if they are hurt, they will move around alot and splash and slap their tail on the water. I LOVE DOLPHINS!
Yes, they do. They have flippers, fins, and a tail.
Yes, Tuna - as all fish and sharks do - move their tails side to side when swimming. Whales and dolphins however, move their flukes up and down.
dolphins swims so fast not because of their skin structure but because of large force exerted by their tail . dolphin can exert a force of 400lb by their tail as compared to olympic swimmers (produce only 60-70lb of force).
Well, if they drown, yes, but not because of the dolphins