Though hippos move easily through the water, they can't actually swim. These animals glide through the water by pushing themselves off other objects.
Hippopotamuses (Hippopotamus amphibius) are large, round, water-loving animals that are native to Africa. The word "hippopotamus" comes from the Greek word for "water horse" or "river horse," although hippos and horses aren't closely related. The closest living relatives to hippos are pigs, whales, and dolphins.
Hippos are very loud animals. Their snorts, grumbles, and wheezes have been measured at 115 decibels about the same volume as you'd get when 15 feet (4.6 m) from the speakers at a rock concert. These booming creatures also use subsonic vocalizations to communicate.
Hippos are aggressive and are considered very dangerous. They have large teeth and tusks that they use for fighting off threats, including humans. Sometimes, their young fall victim to adult hippos' tempers. During a fight between two adults, a young hippo caught in the middle can be seriously hurt or even crushed.
Though hippos move easily through the water, they can't actually swim. These animals glide through the water by pushing themselves off other objects. And they can stay underwater for up to 5 minutes without coming up for air, according to National Geographic.