Air
Marine mammals live and water and they need to surface to breathe. While land mammals can breathe just as humans do.
animals who eat and breathe a lot. Some that go in the water, others that are mammals. Mostly mammals.
Black Bears are mammals and live on land. Mammals have lungs. They breathe the same way you and I do.
They live anywhere where their family is. It's called a pod.
In the water. When beached, they cannot live long, even though they can breathe air.
Most get it from the dissolved oxygen in the water through their gills. Others, such as sea mammals, dolphins etc, need to surface to breathe
I hope you mean under water. And yes they can. Some mammals even live under water, like a dolphin, whale or seal.
They are mammals. Although they live in water, they also breathe air. They have learned to hold their breath for a couple of hours. Imagine that...
Yes, all animals that live in the water breath air bubbles. without air bubbles the fish will die. some animals in that water can go for a longer amount of time with out air. example dolphins.
well, their gills train them to breath without water and live.
Mammals evolved on land, and most still live on land. However, there are still a number that live exclusively in the water (such as whales, dolphins, manatees, etc) and many more that spend much of their time in water (such as beavers, seals, platypus, etc). One thing to note about aquatic mammals is they cannot get oxygen from water like fish, so they have to surface to breathe air frequently.
Whales ARE mammals. They have all the characteristics of mammals. Live birth, nurse their Young, Breathe with lungs, etc etc