They close their Nostrils (Nose) so they can spend longer time under water so they can catch Seals Or Fish
To go under water they close their ears and nostrils. An adult hippo can stay under water for up to 6 minutes!
Hippos can stay underwater for up to six minutes at a time. Their nostrils close to keep water out and they hold their breath until it is time for more air.
Hippos are born under water, they can stay submerged for extended periods.
They don't breathe under water, certainly not like fish do. When they dive they hold their breath, just like whales and dolphins do when they dive. They close their nostrils as they dive to prevent water from coming into their lungs, just as whales/dolphins close their blow-holes before they dive or submerge themselves in the water.
Apart from the ability to close their nostrils, seals hold their breath pretty much like you and I - simply by not breathing.
Hippos can't breathe entirely under water. They have perfectly ordinary lungs to breathe with, so to dive they have to hold their breath. However, hippos, like many semi-aquatic animals, have their nostrils placed well on top of their snouts, so they can breathe just fine with only the top of their heads above the surface.
Animals with nostrils that can close underwater include seals, sea lions, otters, and some whales and dolphins. This adaptation allows them to dive and stay submerged for longer periods of time without water entering their respiratory system.
Hippos can stay underwater for up to six minutes at a time. Their nostrils close to keep water out and they hold their breath until it is time for more air.
Yes, a crocodile can close its nostrils. This adaptation allows them to hold their breath while submerged underwater, as they can seal their nostrils to prevent water from entering. This feature is particularly useful for hunting and avoiding detection while swimming.
for about six minutes
They can hold their breath for ages
Hippos like to swim under water sit in mud hippos can eat up to 100lbs of grass There is no name of the shelter hippos have, but they hide under the mud and grasses. Hippos sleep in the water but not under water.