Hin Daeng (also called Red Rock) is one of the best dive sites in all of Thailand! It is very famous for the great chance of spotting giant Manta Rays. It is not far from other world class dive sites such as Hin Muang. The current can be strong so it is better to be an advanced diver here. The site is located about 2 hours by boat or 1 hour 20 minutes by speedboat.
Hin Muang is ranked as one of the best diving spots in Thailand in competition with the world famous Richelieu Rock. You have great chances to see Manta Rays flying as well as an incredible Marine life. If you are very lucky you can also spot a Whale Shark! Hin Muang Dive site is about the BIG stuff! The southern side descends to over 60 metres and on the eastern side where the slope is gentler, 2 long ridges descend out into the blueness.
The west side of Koh Rok is comprised of a hard coral reef that slopes gently downwards. There is an abundance of colourful reef fish here as well as plenty of moray eels and octopus. Look closely for the numerous different nudibranchs. Blacktip reef sharks can be seen in the early morning and again at dusk. Watch out for Kuhl's blue-spotted stingrays partially hidden in the sand on the sea bed, the most common type of ray found at Thailand's dive sites.
Nice marine life and many giant clams. It is a good spot for diving and snorkelling. The hard coral is very beautiful and you'll see many barrel sponges. Pellagic fishes like dogtooth Tunas, barracudas and trevallies are common. You can also spot turtles and Eagle Rays. For the macro underwater photographers, there is the chance of finding a tiger-tail seahorse as well as many kinds of Shrimps and Nudibranches.
Undoubtedly, the diving highlight at Koh Ha is the series of fascinating caverns which are located at Koh Ha Yai, the largest of the group of islands. The caverns have large entrances and are safe to enter. You can surface inside and see the ancient stalactites which hang from the cave ceiling. Another big attraction here are the swim-throughs. You can access the main cave by entering the swim-through to the right of the main cavern entrance. Once through the entranceway, drop down a little and then make a sharp left to squeeze out through the exit point. You'll find yourself back in the main cavern's chamber!
You can oftenly see Green Turtles, scorpion fishes, Glass Fish and Groupers. The scenery is really beautiful. This dive site is easy and suits all level of divers, so enjoy the relaxing dive.
Around the small uninhabited island of Ko Waen you will find huge boulders covered with corals, sponges and plenty of anemones, schools of fish like a small snappers , barracudas and most often you will meet a lot of calamari during your safety stop. Many overhang, outcropping and caverns provide shelter for schools of cave and sweepers, glassfish and different species of nudibranchs. Occasionally you will meet huge stingray or a leopard shark resting in sand.
The train wreck awaits here for you! Around the small uninhabited island of Koh Waen you will find huge boulders covered with corals, sponges and plenty of anemones, schools of fish like a small snappers , barracudas and most often you will meet a lot of calamari during your safety stop. Many overhang, outcropping and caverns provide shelter for schools of cave and sweepers, glassfish and different species of nudibranchs.