Oxygen is latent in the water, because the water absorbs gasses in the air, like how water absorbs sugar. Since the air (and so oxygen) is in the water, the oyster can use it.
They are underwater habitats conducive to sustainable oyster colonies. Please see the related link below:
yes penguins do need air to breath underwater.
by precipitation
There is no such thing as an actual tornado underwater, as a tornado is, by definition, a vortex of air. However, a vortex underwater is called a whirlpool.
go underwater until you see a giant oyster with a pearl in it's mouth, swim over walk into the mouth to get the pearl
Blowfish/pufferfish inflate with water when underwater, but inflate with air when removed from that environment.
Oxygen - yes. Air - no. Not much of that around underwater.
No. Human beings cannot breath underwater at all without an external source of air.
There is no such thing as an actual tornado underwater, as a tornado is, by definition, a vortex of air. However, a vortex underwater is called a whirlpool.
because none of them can breath air
Yes there is, just like in air.
Don't understand