A sea grass bed in Florida Bay
Young mangroves and carbonate mud in the internal part of the lagoon – Florida Bay
Diagram of plant evolution from the Precambrian
to the sea grasses.
Sea grasses are flowering plants which live in the sea. They come from one of four plant families in the order Alismatales. They are monocotyledons which grow in marine, fully salineenvironments.
Sea grass is a key part of continental shelf ecosystems where phytoplankton produce carbonate sediment. This kind of ecosystem occurs in subtropical places like Florida Bay, and around Bermuda. Sea grass beds often contain many species from various phyla. Apparently, seagrass herbivory is a highly important link in the food chain. Many species feed on sea grasses, such as green turtles, dugongs, manatees, fish, geese, swans, sea urchins and crabs.