1 or 2.
none
Yes all whale have blowholes because they are mammals.
There are currently 88 known species of whales, dolphins, and porpoises that have blowholes, so there are potentially 88 blowholes in the world.
1
Usually they have one Baleen whales have two blowholes. Toothed whales have only one.
2
2
15 gallons in minimum. Water is a typical basic need of a baby beluga whale. Through its blowholes, it can obtain at least 2 pounds of oxygen. They circulate there air bubbles inside the water and create energy to breath in water.
One with two nostrils.
One with two nostrils.
All types of whales have blowholes because they need them to breathe. As we have noses, whales have blowholes. Porpoises and dolphins have blowholes as well.
one, and yes they do, cause theyre mammals and need to breathe