Seagrass meadows">Seagrass meadows
Posted by maggie.surface on November 8th, 2007 
Seagrasses are angiosperms that are restricted to life in the sea. Seagrasses colonised the sea, from terrestrial angiosperm ancestors, about 100 million years ago, which indicates a relatively early appearance of seagrasses in angiosperm evolution. With a rather low number of species (about 50-60), seagrass comprise < 0.02% of the angiosperm flora.