|Whale shark at Sail Rock by Sail Rock Daily News|
As noted in the video description, Sail Rock is "considered the premier dive site in the Gulf of Thailand. It is a pinnacle which rises to 15m above and 40m below the surface. Sail Rock lies between Koh Phangan and Koh tao. It's famous for its natural underwater vertical swim through or chimney which divers can enter at 6 metres and exit at 18. It is also the visiting site of many larger pelagic fish including chevron barracuda, big schools of mackerel, jacks, trevally and tuna.