Most of them can hold their breath for quite a long time, so they just come up above the water to breathe.
Dolphins jump to breathe air because they are mammels.
No, they are birds. Mammals have hair or fur, an internal skeleton, breathe air and give live birth.
No
what are mammels that live on land called? they are called terresteral creatures
yes
Yes.
mammalogist
Yes.
Yes they are.
No they have gills
Yes.
yes