i don't think humans breathe in any water but they do breath out water
Two lungsful.
6g
Dolphins are mammals. They breathe air with lungs, pretty much just like you and I. They can't breathe water. When they dive they hold their breath.
You breathe out more water vapour then when you breathe in
Because they Have Gills, and gills help them to breathe in the water. As water flows over the gills, a fine network of blood vessels can extract oxygen from the water, much like our lungs collect oxygen from the air when we breathe.
Yes They are mammals and have about as much water in their bodies as humans. When they breathe they almost definitely breathe out water vapour. They must drink water at some stage or they will expire.
i don't think humans breathe in any water but they do breath out water
About a pound
We do not breathe in the water as we can't breathe dissolved oxygen.Dissolved oxygen are oxygen that are dissolved into the water.
Crocs don't breathe underwater. They have lungs and Breathe air pretty much just like you and I. They hold their breath when they dive.
They use their gills to breathe under water.
no, they just hold their breathe.
They use a blow hole to breathe in/out air when the surface the water.