how do penguins get their food
How They Drink. Penguins drink the same way most birds do: by swallowing water. Although that's nothing special, penguins often have little choice but to swallow saltwater. When they're swimming in the ocean, they use their strong beaks to catch fish and other prey.ome even eat snow as a source of water. Penguins in zoos live in fresh water, and some species, such as rockhopper penguins, prefer to live around fresh water instead of saltwater. The supraorbital gland serves only one purpose -- to filter salt from the blood -- so it's not used when penguins drink only fresh water.