It's quiet shocking to see how we only know only about 10% of the oceans discoveries and even with our technology, we can't find anything useful. Surprisingly, the sea is able to support marine within depths of water pressure being almost 1,100 atmospheres, which is 1,100 times heavier than our air. Most marine animals here are small and don't require as much oxygen. Most of these organisms have a light source and larger eyes than most fish in order to help out their vision in lower depths of the ocean where there isn't that much light. Although these animals don't require much oxygen, those that live in the surface do. The reason they can is because of Kelp beds, and Coral reefs. Coral reefs are found usually in cooler ares and kelp can be found in warmer areas, usually near a coast of the ocean.