As there is oxygen in water (H2o o=oxygen) , if there is water there is oxygen, so yes.
plants
no oxygen and crushing pressure
These organisms do not need oxygen. They are called anaerobes.
no
There is hardly any oxygen available at low depths, thus making oxygen a survival challenge in the deep.
Deep sea submarine tours are not currently available in this area.
Any animal need oxygen for respiration.
The phrase "deep blue sea" means any deep water - if you have ever seen really deep ocean or lake water, you know that it is a really deep blue, almost black, color.
Oxygen is used in welding, by the deep sea divers and is also used in hospitals to patients with breathing difficulties.
an example is any sea or ocean because it is just measuring how deep it is
95-98%helium 2-5% Oxygen
well.logically it just makes sense that since there is less oxygen above sea level (mt Everest roughly 1/3 of the oxygen at sea level) that there would be more oxygen below sea level. note: this is completely hypothetical and has no scientific backing whatsoever