Seagrasses are called seagrasses because the leaves are long and narrow and usually green, and grow in large meadow which make them look like grasslands. Seagrasses are important in coastal marine areas. That is beacause it is the main food for dugong and green turtles and makes a good habitat for many small marine animals. Also, the help keeping the water clear and it provides wave protection and protection for coastal erosion. Sea grasses are the only flowering plant in the sea. There are a lot of species of seagrasses however while there are over 500 species of algae, there are only 15 species of seagrasses on the Great Barrier Reef. -->Sometimes, there are different colors of seagrasses. Why does that happen?
http://www.reef.crc.org.au/discover/plantsanimals/seagrass/index.html
http://www.answers.com/topic/seagrass-2
