Sharks can ONLY breath underwater. They're not mammals like us.
Sharks can stay under as long as they please because they have gills which allows them to get oxygen from the water. They can't, and don't need to breathe air.
Sharks have gills. They can only breathe underwater.
some sharks don't need air
They only have one respriatory system and it is similar to humans. They breath oxygen from ther air with their lungs. When they are underwater they simply hold their breath (and can do so for a very long time). They do not breath water with gills like fish.
Holding your breath depends on oxygen in your system. After breathing in a bag, you've been depriving yourself of oxygen (breathing in what you breath out - carbon dioxide) and so you're oxygen starved.
Penguins have a fairly large lung capacity,allowing them to hold their breath for a certain period of time.
they dont breath air so they never have to come up
no, sharks are fish not mammals and rarely give live birth. They do not produce "milk" for their youngAnswerNo, sharks are fish, in that they breath water using gills, wheareas mammals are categorized with land animals, which breath air using lungs. Sharks give live birth; in that perhaps most important sense they would fall into the category mammal. But sharks cannot produce milk, and mammal means giving milk in latin, although the name was derived a long time ago before modern science.
Because their lungs are so large.
Because they can, and it's free
Praying Mantis are insects, they do not have lungs (gas exchanges happens using spiracles) so they can not hold their breath.
No. Monkeys are mammals, so they have lungs, which cannot filter water. They can hold their breath underwater, though.
Myoglobin enables the marine mammals to be able to hold their breath for extended periods of time underwater. The beaver has been reported to hold its breath underwater for about 15 minutes.
because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die. because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die.
starfish are aquatic, so for its entire life i guess
because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die. because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die.
Yes they do, but they also breath under-water. They can breath under-water for 14 hours.
There is a myth that mermaids can hold their breath underwater indefinitely, but in reality, humans can hold their breath anywhere from 1-3 minutes on average. If mermaids were real, they would likely have similar breath-holding capabilities to humans.
To dive deep into the ocean and hunt for its prey.
Your lungs don't stop working but if they do and I didn't know that you have as long as you can hold your breath for so it varies.