This is some interesting facts.
Some Ocean Ecosystems
1. Coral. Coral is a living thing, and it has a hard outer shell and tentacles that can sting. A lot of other living things make their homes here. Sea urchins, octopuses, and fish all live near coral reefs.2.Open Ocean. The open ocean is far from land and it has cold water. Whales, dolphins,fish, and plankton are living things that are in the open ocean.3.Deep sea. The deep sea water is very cold. It is deep so sunlight doesn't reach there, so it's dark down there.Sea anemones, sponges, eels, and Giant Spider Crabs are some living things in the deep sea.