The ocean is made up of salt water. It is the largest body of water. It has high tides and low tides. The temperature changes based on the depth, or level, of water. It's warmer on top and cooler down below. Some of the plant life you will see in the ocean is algae, sea weed, anemones, and floating aquatic plants. Some of the animals you will in the ocean are plankton, sea snails, sharks, fish, whales, sea turtles, and octopuses.
Click here for more information on the ocean (marine)
Click here for more information on coral reefs
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