Similan Island National Park.

The picturesque above-water landscape boasts stunningly beautiful white sandy beaches adorned with pockets of lush forests. Explore the underwater wonders at these dive sites: Boulder City, Sharkfin Reef, Anita's Reef, and Three Trees.

Beneath the surface, you'll encounter a diverse marine life, including leopard (zebra) sharks, blue-spotted stingrays, clown triggerfish, rabbitfish, scorpionfish, snappers, emperor fish, giant trevally, and angelfish. The coral gardens, underwater bommies, and rocky boulder formations offer captivating diving experiences.

One of the Similan Islands' standout features is Elephant Head Rock, towering above the water and featuring spectacular swim-throughs. Whitetip reef sharks, batfish, trevally, and barracuda often grace the outskirts of these imposing boulders. If you scrutinize the crevices and debris, you'll spot the vibrant mantis shrimp, porcelain crab, moray eels, and cleaner shrimp.

Additionally, some dive sites are characterized by massive granite boulders, such as Deep Six, Christmas Point, and North Point, where you can witness white-tip reef sharks, schools of giant trevally, and shoals of neon fusiliers.

Koh Bon stands out as the prime spot for encountering manta rays during our Similans itinerary. Moreover, you can expect to come across Napoleon wrasse, sweetlips, octopus, bluefin trevally, giant moray eels, great barracudas, fire dart gobies, spiny lobsters, and a rich variety of nudibranchs.

The dive sites encompass a range of underwater landscapes, including dramatic wall dives, gradual sloping reefs, submerged boulders, and vibrant coral gardens.

Diving along the West Ridge offers an exhilarating drift experience, affording breathtaking views of the underwater world, while the North Reef provides a more leisurely encounter as you explore a pristine hard coral garden.

Koh Tachai is renowned for its iconic pinnacle dive site, often referred to as Twin Peaks, and offers a more tranquil reef diving experience at the North Reef and South Reef. Common sightings include turtles, barracuda, pipefish, and a colorful array of nudibranchs.

Moreover, there's an exciting opportunity to encounter larger species in this region, such as manta rays and whale sharks, particularly between late January and April.

Richelieu Rock, this limestone pinnacle derives its name from Andreas Richelieu, a former Danish Naval Officer who held the distinction of becoming the only foreign-born commander-in-chief of the Royal Thai Navy, appointed by King Chulalongkorn. Due to his profound influence and importance, the rocky outcrop was eventually named in his honor.

At low tide, this horseshoe-shaped formation only slightly breaks the surface, sloping sharply down to a sandy bottom at depths ranging from 18 to 35 meters (60-120 feet). Despite its relatively small and isolated size, this site boasts remarkable diversity.

The marine life here is exceptionally rich and includes a plethora of fascinating creatures, such as pharaoh cuttlefish, large octopuses, all five varieties of anemone fish found in the Andaman Sea, various species of moray eels, ornate ghost pipefish, smashing mantis shrimps, harlequin shrimps, tigertail seahorses, Spanish mackerel, frogfish, numerous schooling snappers, and the occasional thrilling sightings of manta rays and whale sharks.