It's thought they first became stranded after coming inland to eat crustaceans and squid.
But now biologists fear they have become sick and disorientated and their chances of survival are slim.
Whales breath air through a blowhole on the top of their bodies, but it is still vital to get them back into the sea or they will die.
This is because they are unable to support their huge body weight on land. If stranded for too long their own weight will crush their internal organs.
Also, because they have a lot of blubber they can overheat and die from dehydration.