There are many types of seagrass, much like grasses growing on land, that populate and blanket the ocean floor. Shoal grass, manatee grass, widgeon grass, eelgrass and turtle grass are all types of seagrass that inhabit sunlit areas of the seafloor. read more
Seaweed, which is a type of phytoplankton, is commonly found floating on the surface of the ocean. It is harvested by people for food and material for housing, baskets and ropes. Seagrasses are rooted marine plants that live on the ocean floor. read more
It holds 320 million cubic miles of water. The deepest parts of the ocean may have little or no plant life. Because ocean plants need sunlight, most are either designed to float on the surface of the water, or grow on the ocean floor in water that is shallow enough to receive adequate sunlight. read more
Since most of the ocean is too deep for light to penetrate to the bottom, there ARE NO PLANTS on the ocean floor except in places near shore where the water is relatively shallow, not much over about three hundred feet deep for the most part. There are many kinds of plants in water up to about this depth. read more