Coral Reefs.

                    Coral Reefs.

Coral reefs are structures found underwater ecosystem create together by calcium carbonate structures. Most reefs grow best in warm ,shallow,clear,sunny and agitated water. Most corals are composed from stony corals, which consist of ting animals belonging to the family cnidarian called polyps.


         Main Types,

Barrier
Atolls
Fringing reefs


Others,
Platform reef
Apron reef
Table reef
Ribbon reef


                        Coral reefs have an extremely productive biodiversity , hosting numerous plants and animals complex and varied habits that sustain life for a wide variety of creatures most coral reefs are built from stony corals.

                        In Sri Lanka   coral reefs have long been attracting tourist from around the world. coral reefs are Hikkaduwa, Unawatuna ,Batticaloa , Pigeon island.