It is huge and conjoined together so it lets it move fast in water
They move there tail up and down and it propels them forward while the flippers help it stear i think
it helps the squid to move because its fit to the squid and this is really shape of squid to move so shape can help us like people have shape too and animals so that they help us ........
All whales move their tails up and down.
of course
The whales jump
Whales are not fish. Fish move their bodies sideways when they swim; whales move their bodies up and down.
cytoskeleton
Water animals such as whales are streamlined to help them move more easily in water.
Their shape helps them to keep it floating by being full of air and their shape is mostly for speed and being able to move.
Whales' front limbs are called fins. Only some whales have back limbs, which are very small. The tail is divided into two extensions called flukes. Most whales also have a dorsal fin.
Whales' tails move up and down when they swim, just like peoples' legs.
Their shape helps them to keep it floating by being full of air and their shape is mostly for speed and being able to move.