1
There are currently 88 known species of whales, dolphins, and porpoises that have blowholes, so there are potentially 88 blowholes in the world.
Usually they have one Baleen whales have two blowholes. Toothed whales have only one.
2
2
1 or 2.
none
One with two nostrils.
Do porpoises have teeth
One with two nostrils.
Yes all whale have blowholes because they are mammals.
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 a porpoise is a mammal.