So that they can propel themselves through the water. They do this by moving their tail in a horizontal motion (side to side).
No. Sharks, being fish, have vertical tails, while whales, being mammals, have horizontal tails.
because of the tail whale tails are horizontal and shark tails are vertical
thersher sharks are known for their long tails
no they have fins and tails but no legs or arms :)
They need their tails to swim.
There brain look similar.
They have shark tails. If they have shark tails then they'd be catagorized for a shark. They are called a whale shark because their big like a whale and shark because it is a shark (tail)
dolphins hit sharks in the face with their tails and because there always in pods.
Sharks need to mate for there to be new Sharks born.
we need sharks because they are just something to explore ad they are cool
bulll sharks need to move so they stay a live
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.