because it helps it swim fast
no
Marlins are relatively fast swimmers. They are capable of reaching speeds of 50 to 80 mph. Some experts believe they are the fastest fish on the planet.
=How fast does a squid swim?==they can swim really fast=
jelly fish
A penguin can swim as fast as a seal
Sydney (Australia)
it can swim as fast as a jet
Dolphin swim fast so they can catch there prey
Up to 15 miles an hour. Hope this helps you!
swim well
he can swim just as fast as any other penguin so not very fast then