Some fish live near the top of the ocean in the day and then they swim down to the deep ocean at night. Other fish swim up to the top of the ocean at night, and they look for plankton — very small animals that swim up to the top of the ocean every evening to find food.
Plankton are food for fish like the lantern fish. The lantern fish stays down in the deep ocean in the day, but when the sun goes down it swims to the top of the ocean. It feeds near the top of the ocean at night, and then swims back down before morning.
The Lantern fish has lights on it’s body when it swims.
The white tip reef shark also comes out at night. It stays in caves down in the deep ocean in the day, and doesn’t move very much. Then at night, it comes out to hunt for fish and octopuses.