This dive site, Hin Ao Yai, located in the Ao Yai area, is a versatile underwater location perfect for a wide range of divers. It features distinct zones, with some areas specifically suited for beginner training and others offering exciting drift dive opportunities. The site is known for its shallow profile, making navigation straightforward, though divers should be mindful of currents in the drift sections. There is no specific historical account mentioned for this natural reef formation.
The marine life at Hin Ao Yai is notable for its larger inhabitants, including regular sightings of turtles, barracudas, and cobia. The site is also home to vibrant and extensive fan corals, which create a picturesque backdrop and support a diverse ecosystem of smaller reef fish and invertebrates, contributing to a lively underwater environment.
The best time to visit Hin Ao Yai, and Koh Kood in general, is typically from November to May when the seas are calmest and visibility is at its peak. This site's shallow average depth and gentle currents in certain areas make it highly suitable for both freedivers and scuba divers looking to improve their skills or enjoy a relaxed exploration. For divers, considering the drift sections, it is advisable to be comfortable with current diving techniques.

