This unique dive-site is a huge lime-stone pinnacle that soars 30 meters up from the seafloor to just beneath the surface then abruptly ends and drops back to a bottom of sand and oyster shells.
This barely submerged reef is a well-known shipping hazard and is located less than a mile North of Shark Point. The Thai name for this site is Hin Jom (underwater rock). Although not as colorful as Shark Point this site is famous for its vast fields of sea anemones that cling to every conceivable surface and swing and sway with the current creating an illusion of it being a giant living rock.
The profusion of sea anemones and the nutrient-rich water are a magnet to a constant parade of reef fish seeking food and shelter. Enormous schools of tropical fish, snappers, groupers, and colorful clown fish, along with larger game-fish like tuna and barracuda, and the occasional leopard shark can be seen passing by. Anemone Reef is also famous as a site for to viewing lionfish sometimes encountered in-groups of twelve or more.