A mermaid has gills on either side of her neck, or her sides. The gills allow her to hold her breath for a long time.
You can't breathe under water but you can hold your breath for an extremely long time and you can also see under water.
just go to this site and it will tell you a lot of ways to hold your breath underwater.www.wikihow.com/Hold-Your-Breath-for-Long-Periods-of-Time
yes depending on how long
Only if you hold your breath for a REALLY long time, like turning blue.
Practicing!
Yes
As long as a human does less time if they hold their breath
whales an not breath under waterno they can hold their breath under water for long periods of time but come up to the surface for airNo they can't. They take a big breath of air above the surface then they just hold their breath for a long time.
they can hold their breath for a long time
yes or nah
Hippos can't "breath" underwater but they can hold their breath for long periods of time.
They do not breathe under water, they just hold their breath for long periods of time.