For threm to breathe and get oxygen.
The answer is 2 blowholes for whales.
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.
no
All whales have a blow hole.
Whales and dolphins.
Usually they have one Baleen whales have two blowholes. Toothed whales have only one.
Yes all whale have blowholes because they are mammals.
They have blowholes.
No
2
2
There are currently 88 known species of whales, dolphins, and porpoises that have blowholes, so there are potentially 88 blowholes in the world.