Reefs

thumb|Coral reef at Nusa Lembongan, Bali, Indonesia thumb|Pamalican island with surrounding reef, [[Sulu Sea, Philippines]] thumb|A reef surrounding an islet thumb|Reefs off Vanatinai|Vanatinai Island in the [[Louisiade Archipelago]]

Parangcho (), also known as Dingyan Islet (), is a disputed submerged reef about 4.5 km from Socotra Rock in the Yellow Sea. The reef is about long by wide and below the surface.

rocky reef off the coast of KwaZulu-Natal, South Africa

reef in Australia