To breath more freely in open air. Percentage of oxygen in water is less for big creatures like whale. Therefore, sometimes they come out of water for more oxygen.
The density increases..
it is simple it is the spram whale
Its density increases.
An Sperm Whales can dive for about 5 mintures
im not sure what you mean by "blubber whale" since all whales have blubber but sperm whale do dive down very deep to hunt giant squid.
no
The blue whale can dive for 10-20 minutes and dive for 500 metres deep.
The whale is flexible. The submarine is not, and is therefore subject to crushing from the pressure.
to go for food.Or just to have fun
Fin whales (Balaenoptera physalus) can dive as deep as 470 m (1540 ft).
50 billioon feet
Orcas can dive upto a 1,000 feet (304.8m).