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Oxygen dissolves in water - one of the components of a fishtank is one that bubbles oxygen into the water to keep it oxygenated, but it happens naturally too via different processes. It is this oxygen that fish breathe.
Only the top 'layer' of the ocean is particularly oxygen rich, below this, it is colder and poor in oxygen. However water from the top level can become cold and salty under some circumstances, the increased density makes it sink. This is how oxygenated water is brought downwards for bottom-dwelling animals.
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Does crab breathe in dissolved oxygen?
Yes, hence some species are able to live at great depths in the oceans
Animals that make their own light are called what?
many animals that live in the very depths of the oceans where there is no light such as the angler fish
What simile can you do for blue eyes?
As blue as the oceans depths
What type of fish lives in the depths of the seas and oceans?
angelfish
Does the giant squid really live in the depths of the oceans?
yes
What makes oceans extreme environments?
it's deep depths and tempretures
What is a bathymetrist?
A bathymetrist is a person who carries out bathymetry - the measurement of the depths of oceans or seas.
What is true about the deepest part of the ocean floor?
The deepest parts of oceans are dark all the time because natural light does not penetrate to the ocean depths. Little is known about life in the depths of the ocean. More is known about the moon than the depths of the oceans. Water pressure is great, the temperature is constant.
What is the cuttlefishes natural habitat?
inhabit tropical/temperate ocean waters. They are mostly shallow-water animals although they are known to go to depths of about 600 metres (2,000 ft)
What is the depths of all seven major oceans?
1900,000 feet below sea level
How deep can a jellyfis live in the ocean?
Jellyfish have been seen at extreme depths in oceans.
Why angler fish live?
anglerfish lives in the dark depths of the Atlantic and Antarctic oceans.
