How deep is the Atlantic and Pacific Oceans?

Why does the Navy , I think, train people to swim in 30 feet of water when the Ocean is so much deeper? How much deeper is the ocean?

The surface of the oceans varies widely. Some parts of the Pacific ocean are over 35000 feet deep. However, no-one will actually swim down to that depth without being in some vehicle. Also, people don't normally swim below 30 feet without some type of air supply. If they did, there is a good chance they could develop "the bends" in the time they would take to surface for air.

Just because the Oceans are deeper, doesn't mean people can swim that deep.

you must send robotic deep measurer...

the oceans are as deep as 10 kms. it is not possible to swim deep beacuse the water pressure is very high as the depth increases, already with 30 ft , the swimmer has to bear a higher pressure than atmosphere.

I don't think we have the technology to go very deep in oceans. The pressure is to much. It would be interesting to find whats under there. Maybe lots of ships and gold?

the deepest point in the pacific ocean is 36160 feet in the Marianas trench. the deepest point in the Atlantic is 28681 feet in the puerto rico trench. they train people to swim in thirty foot of water cause if u can swim in thirty foot u can swim in water at any depth it is just a depth they picked i am talking of course about surface swimming as far as scuba diving that's a different ballgame u can only swim so deep before the pressure would crush you