I wonder what's it like at the bottom of the ocean..

The deeper you go, the darker it gets. Many fish who live at 2,000 feet or deeper have their own flashlights. They are luminous--they glow with light-producing cells. This light helps them get around in the blackness and attract prey. Other fish are blind--since they can't see down there, they never developed functioning eyes. Most of all, it's cold at the bottom--sometimes as cold as 28 degrees Fahrenheit.