First of all, it would be much darker the deeper you go. On the surface, the light from the sun touches the ocean, making the ocean look like a light blue. However, if you dive down even deeper, you will find a darker blue, and later nothing (the sun won't touch the deep parts of the ocean, so all you would see is darkness). The short answer to this is: It's lighter around the surface, and darker the deeper you dive down into the ocean.
Answer: Many are DECIDUOUS TREES that lose their leaves in fall, but the broad-leaved trees of a tropical rain forest are evergreen. The mass of leaves of adjacent trees form a CANOPY.
Explanation: I hope this helps, I am stuck on the same question too.