View to Ko Ba Ngu Island, also known as Ko Bayuor, Mu Ko Similan National Park, Similan Islands, Phang Nga province, Thailand, Asia

Reef manta ray (Manta alfredi) swims in blue water, Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Swarm of spiny mackerel (Caranx sexfasciatus) swimming in the open sea, Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Blacktip grouper (Epinephelus fasciatus) resting on Sinularia soft coral (Sinularia gibberosa), Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Anemone field from Magnificent sea anemones (Heteractis magnifica) with Pink skunk clownfish (Amphiprion perideraion) Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Reef manta ray (Manta alfredi) swims over cleaning station in back light, Richelieu Rock, Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Reef landscape with parrot fish (Chlorurus erythrodon), Tubastrea micranthus (Tubastrea micranthus) Pseudanthias damselfish (Pseudanthias) Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Diver with diving lamp at coral reef wall viewing Gorgonie (Annella mollis) Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Reef manta ray (Manta alfredi) four, swimming to cleaning station, Richelieu Rock, Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

Sixspine butterflyfish (Parachaetodon ocellatus), with cleaner wrasse (Labroides dimidiatus), swimming over Montipora hard coral (Montipora tubercolosa), Andaman Sea, Mu Ko Similan National Park, Similan Islands, Phang Nga Province, Thailand, Asia

"Excursion boats moored off the Similan Islands, Mu Ko Similan National Park, Thailand, Asia"