>> Because their eyes and nostrils are located on the top of their heads, they can still see and breathe while underwater. That is an inaccurate use of the wor

>> Because their eyes and nostrils are located on the top of their heads, they can still see and breathe while underwater. That is an inaccurate use of the word underwater. Underwater means beneath the surface. Breathing moves gases in and out of the lungs. These gases are not available in sufficient quantities beneath a liquid's surface to perform typical breathing behavior. A better description is "while its body is submerged": The hippo's nose, ears, and eyes are on the top of its head, and they protrude from the water while the rest of its head and its body lie beneath the surface. That way a hippo can breathe, see, and hear even while its body is submerged. https://kids.nationalgeographic.com/animals/mammals/facts/hippopotamus https://kids.nationalgeographic.com/animals/mammals/facts/hi... You could be kind to Nat Geo Adults and Buckeyes and say "ok, that's mostly underwater" but its still wrong because of the way it talks about eyes. Light penetrates the surface of water and the Hippo's optical organs are not deleteriously effected by most liquid water unlike the alveoli of lungs. Thus eyes can see underwater even though a Hippo will not be able to breathe effectively.