Similan islands marine life guide
Find out more about all the underwater creature and fish you can find at the Similan islands, where to see sharks, manta, seahorse?
Our marine life guide offers detailed information about each species, reproduction, habitat, feeding habit and behavior.
Learn about Thailand marine life and underwater faune and flora, the Similan islands and it’s marine reserve offer one of the widest diversity of marine life in Thailand, combined with one of the best diving spot in South East Asia. Make sure to come during the Similan diving season.

Marco lovers will be delighted with seahorses, nudibranches, shrimps and more, while giant lovers will be please with manta rays, whale sharks and a wide variety of pelagic species.
Similan islands wildlife
The marine park offers a wide diversity of marine life and wildlife to encounter during your Similan islands liveaboard or daytrip.
Our guide will guide you through all the marine life that the Similan islands as to offer, where to find them, how to recognized them, habitat, feeding habit, reproduction, all your need to know about the Similan islands marine life.
From the giant manta rays to the tiny seahorse during your Khao Lak diving daytrip to Richelieu Rock, Thailand and the Similan islands have great wildlife to offer to scuba divers.
Similan islands marine species

Ocras in Thailand and the Andaman sea, Similan Killer Whales

Ocras in Thailand and the Andaman sea, Similan Killer Whales

Are there killer whales in Thailand? Orcas, also known as killer whales, are the largest members of the dolphin family and are known for their intelligence, strength, and predatory behavior. They are found in all oceans of the world, but the population in the…

Rays of the Similan islands and Thailand

Rays of the Similan islands and Thailand

Thailand is blessed with very rich waters in terms of flora and fauna. From the Gulf of Thailand to the Andaman Sea, Thai waters shelter plenty of different species of corals, fish, sharks, rays, and almost every other class of marine creature you can…

How does ocean pollution affect marine life?

How does ocean pollution affect marine life?

By now, most people have witnessed all the hype of reducing plastic use (bags, straws, etc.), but do you really know why people are pushing for it? Do you live in a land locked state or country and wonder how you reducing plastic use helps save the ocean from plastic killing marine life?

Moray Eels

Moray Eels

Moray Eels: Double-Jawed, Oddball Fish Would you believe moray eels are actually fish? Moray eels are such interesting creatures that are often a highlight of a scuba diving adventure. When on a dive, it becomes a sort of treasure hunt, looking into all the…

Frogfish

Frogfish

Frogfish: Masters of camouflage Frogfish are a true joy to encounter underwater; these are one of the hardest fish to spot underwater, in fact most divers who encounter them will usually tell you it’s a real stroke of luck to bump into a frogfish…

Whales in Thailand

Whales in Thailand

Whales are truly magnificent creatures, and while you may mentally associate whales with the deep open ocean or seas in the colder regions of the plant, you will be surprised to know that Thailand has more than its fair share of whales and dolphins….

Dolphins in Thailand

Dolphins in Thailand

Introduction Diving with dolphins is one of the most amazing experience a diver can have, even swimming or snorkeling with these creatures can be almost life changing. The impacts are so profound that contact with dolphins is even used in some therapeutic applications. Luckily,…

Symbiosis in the marine environment

Symbiosis in the marine environment

Introduction Take a look around you in nature and you will be surprised by the fact that no creature is an island, there are thousands of creatures living happily in symbiotic relationships. In fact, they are so common that even us humans live in…

Coral types and how to recognize them

Coral types and how to recognize them

Introduction The primary domain of divers is the coral reef, since most diving around the world takes place on coral reefs in the tropics. As divers we swim around reefs marveling at all the weird and wonderful creatures that surround us. While it is…

Coral reefs of Similan

Coral reefs of Similan

Introduction Chances are you have heard of coral reefs. If you are a diver then in all likelihood you have dived on a coral reef and like the rest of us have been amazed and stupefied at the sheer size, color and abundant life…

The Mysterious Cuttlefish at Similan Islands Thailand

The Mysterious Cuttlefish at Similan Islands Thailand

Introduction Comic book writers have often looked to the animal world for inspiration when creating their superheroes. From flying to the ability to crawl up walls and throw out a web from their wrist, tiny little animals have been the source of inspiration. However,…

Manta Rays of Thailand

Manta Rays of Thailand

Introduction If anything the magnificent manta ray reminds many people of watching an old war film or a busy airport. Your eyes are drawn to the distance and you are mesmerised as your see aircraft after aircraft appear in the gloom, and make their…

Whitetip reef sharks

Whitetip reef sharks

Let’s face it, divers need to see sharks underwater, it’s one of the most exciting and exhilarating experiences you can have, along with encountering manta rays and dolphins. If you still haven’t seen a shark or have seen many, then in all likelihood your…

Nudibranchs

Nudibranchs

Almost all dives are familiar with the beautiful and intriguing nudibranchs. These magnificent little creatures are so widespread around the globe that it is almost impossible to choose a dive destination that does not have some resident species of nudibranchs. Most divers are familiar…

Seahorses

Seahorses

Seahorses are hard to find and they are one of the favourites to spot by most divers. These super photogenic little creatures are considered by many to be one of the cutest animals in the underwater world. They have been known for centuries and…

Sea Snakes

Sea Snakes

Sea snakes are a paradoxical creature; on the one hand, they have a reputation for being gentle beautiful creatures that people often interact with while diving, and they don’t create anywhere near the fearsome and terrifying reactions that most of their land counterparts do….

The Mantis Shrimp

The Mantis Shrimp

Introduction If the animal Kingdom ever had a competition to crown its own superhero, with its supernatural freaky powers, the cute and colorful Mantis shrimp would be the outstanding favorite to claim the title. This humble crustacean packs an amazing array of unusual talents…

The Amazing Octopus

The Amazing Octopus

When you first glance the humble octopus while diving, it seems interesting but does not have the wow factor that some other species have. It is neither big or graceful like a whale shark or a manta, nor is it as hyper colorful and…

Whale Sharks Season Similan Islands Thailand

Whale Sharks Season Similan Islands Thailand

Ask any diver what is on their bucket list of things to see underwater, and in all likelihood the majestic whale shark will be top choice for almost every diver. This beautiful and utterly enormous creature attracts divers like the proverbial moth to a…