It depends what area you are in. If your area uses ocean to transport goods for money then yes it's very important. Also the ocean helps marine biologists do what they do. Ocean water is also put into a desalinization process which makes the water fresh instead of salty. This provides more drinking water for the world.
the answer is breathe.
they are used to salt water and the gills help them breathe the little air there is in the ocean
They help us breathe while we help them live.
because it helps us t o breathe
Well, ocean creatures have gills and breathe in water.
yes they help us breathe
cuz its what u need to breathe
your lungs!
alveoli
No, they are fish and must be in the ocean to breathe.
with their gills
It gives us fish food