Marine regions cover about three-fourths of the Earth's surface and include oceans, coral reefs, and estuaries. It is warmer as you get closer to the equator and it is colder as you get closer to the poles.
There are many types of life in the oceans and other marine biomes. Some major animals are sharks, fish, and whales.
Three major types of plants are coral weed, sea weed, and various forms of kelp.