The answer is 2 blowholes for whales.
6
Usually they have one Baleen whales have two blowholes. Toothed whales have only one.
2
2
1 or 2.
none
There are 6 species of porpoise. Naturally the vertebrates differ. The most recorded is that of the finless porpoise, with only 58 to 65 vertebrates.
One with two nostrils.
Do porpoises have teeth
One with two nostrils.
Yes all whale have blowholes because they are mammals.