Penguins are very interesting birds. They cannot fly, but they are good at swimming. Penguins spend most of their time in the water. However, they are birds, so they cannot breathe underwater. They can hold their breath for a long time, but at some point, they have to come up for air. Sometimes Penguins swim slowly on top of the water to get there. But when penguins are chasing fish, they can jump out of the water. As they swim fast, penguins will jump out of the water, take a breath of air and go back underwater. Penguins can also jump out of the water onto a flat piece of ice if they are tired of swimming. Most penguins live in cold places. How do penguins deal with it? Well, for one thing, they have two layers of special feathers that keep them warm. They also produce a special oil that they rub over the feathers. This oil keeps water and wind out. So when penguins are swimming, the water does not get through the layers of feathers and the Penguins bodies do not get wet. When they are out of the water, penguins are protected from the wind, too. Penguins also have a lot of fat under their skin. Along with their feathers, the fat helps keep them warm. But if that does not work, they can always use body heat. Penguins are warm-blooded, just like people. So, if they get cold, they can stand close together and share their body heat. Penguins live in cold places where all the fresh water is frozen. So, what do penguins drink? They drink salt water from the ocean. In the penguins mouth, the salt is taken out of the water and goes out through holes in the penguin's bill.