Why is the Atlantic green and the Caribbean blue?

Question

Why is the Atlantic green and the Caribbean blue?

Answer 1

because of the sea bottom, the caribbean sea is covered by reefs and flatter  and the atlantic is an ocean and and 20 times deeper .

Answer 2

Part of it depends on the way the sun hits it. Also the depth is different and the plant life that inhabits it characterizes the color.

Answer 3

The plant life is different in the warm water.  That is why all tropical water is blue and colder waters tend to have a greenish color.  Also the Caribbean is not as deep as the Atlantic.