River otters generally live along rivers, as their name implies, but they're also found near streams and lakes. Otters prefer water bordered by woods and with wetlands, such as marshes, nearby. Flexing their long bodies up and down, paddling with their webbed hind feet, and using their feet and strong tails to steer, river otters are underwater acrobats. They can stay underwater for up to four minutes.
As they dive, they close their ears and nostrils to keep water out. They hunt underwater, skillfully chasing fish, their main food. Otters grab their prey in their mouths. When the otters catch large fish, they haul them onto shore to dine.
While river otters spend most of their time in water, they do travel across land as well—often in search of a mate. Otters even make their land travel look playful. They run a few steps and then slide on their bellies. Clearly, otters know how to have fun!