Sea creatures like fish have a different breathing system than mammals laki us. While mammals including man have lungs that can oxygenate our blood when we breathe , fish have gills that extract oxygen that is dissolved in water when water moves through their gills .
And since gills are specialized in extracting oxygen from water and they can't extract oxygen from air , when fish is taken out of the water , it can't get oxygen from air and they actually drown in air and die.
Exact opposite to what happen to us when we get submerged under water.
If you mean, "are all under water creatures, sea creatures?" then no. The term SEA is for the ocean and there also can be creatures in freshwater. Also some creatures that live in water such as some snakes and sea turtles come out of the water every so often, so they are no total sea/water creatures. Fish are underwater creatures though.
Most sea-creatures have gills, which filter the water & turns it into oxygen for them. Others can just hold their breath for a long time.
Sea creatures breathe underwater using gills, which extract oxygen from the water. Gills are equipped with thin membranes that allow oxygen to pass through and carbon dioxide to be released. This process enables sea creatures to extract oxygen from the water in order to survive.
Sea Snakes can hold their breath for up to an hour.
if only I am a girl
they have holes in them to breath the air in the water
they dont they are fish they breath under water
Turtles don't breathe under water. They've got lungs - not gills. They hold their breath when they dive.
fish
Basically all that he does!
Any type of water But mostly in the sea because it says it in the name SEA CREATURES but basically in any body of water.
goggles and snorkel or an oxegen tank used for deep sea diving