Did you know?
One feature of the deep ocean is that this region of ocean is subject to very high pressure due to the tremendous weight of the water above. So, how about a demonstration?
Take one Styrofoam cup, decorate it, and send it over a mile deep in the ocean. What happens to the Styrofoam cup?
It shrinks! Why? Pressure in the ocean increases about 1 atmosphere for every 10 m increase in depth. The increased pressure compresses the air inside the Styrofoam, and the cup condenses. It’s the same reason why your ears start “popping” when you drive to an area of higher elevation, like the mountains, or fly in an airplane. In that case, increase in altitude means a decrease in pressure