They move there tail up and down and it propels them forward while the flippers help it stear i think
it helps them swim and sometimes jump.
Whales' tails move up and down when they swim, just like peoples' legs.
yes they do
Whales are not fish. Fish move their bodies sideways when they swim; whales move their bodies up and down.
yes yes
So they can swim because they can't move on land.
they just move ther tail fin up and down
Whales swim using their fins and tails.
they move there tale up and down and do alittle thing called swimming
false. Fish move their tails side to side to aid motion. However, whales were once land animals and their spines are built differently. To be able to move with that physical set up, their tails move up and down.
yes whales are safer to swim with because whales don't bite
Up and down not so sure