SSI - Your choice for certification © MaresScuba DivingLearn MoreLearn how to scuba dive and change the way you view the world forever. You will get to explore a hidden underwater world filled with colorful marine life and dramatic landscapes. This safe fun sport for the whole family is truly unbeatable. Begin your adventure today. © Mares - Bjoern-DorstewitzExtended RangeLearn MoreSSI’s Extended Range allows you to go beyond the limits of recreational diving. This extensive compilation of globally recognized tec diving programs will equip you to go decompression diving, explore more challenging environments, and use new equipment configurations. © Mares - Irena StangierskaRebreather DivingLearn MoreEnjoy the bubble-free silence of rebreather diving. Learn to independently plan and conduct rebreather dives using a closed-circuit or semi-closed rebreather. Start your rebreather training today with SSI’s globally recognized rebreather programs! © AqualungSnorkel DiverLearn MoreLearn how to snorkel with the SSI Snorkel Diver program. Discover all you need to go snorkeling and experience the wonders of the ocean! Get started with SSI today! © iStock - MihtianderFreedivingLearn MoreAre you ready for the ultimate in underwater exploration? Learn to freedive and experience the utter freedom this amazing sport provides. It is the greatest adventure of your life! Earn your freediving certification with SSI. Get started today. © Shutterstock - ToporkovaMermaidLearn MoreYour lifelong dream of becoming a mermaid is just a tail-flick away! No longer just a fairy tale, becoming a mermaid is a great way to keep fit, have fun and appreciate the marvels of the ocean. This is not just for children, it is for everyone! Get started today with SSI! © Shutterstock - Jacob LundSwimLearn MoreSwimming is an essential life skill that brings families together and keeps children – and adults - safe in and around water for a lifetime. Learn how to swim with SSI. You will be safe, have fun and open up a world of water-related experiences! Start swimming with SSI now! © Shutterstock - Wonderful-NatureLifeguardLearn MoreIf you are comfortable in and around water and want to make a difference to peoples’ lives, join the SSI Lifeguard team. Accept the challenge! Earn your SSI Lifeguard certifications and join lifeguards around the world, make lifeguarding your fulltime job and save lives. Book your next Dive Course – SSI Course & Event Calendar Explore beginner to instructor courses, community events, and global dive trips. Immerse yourself in a world of discovery and unforgettable experiences with our SSI course and event calendar. Find upcoming course dates Explore the best dive sites in Thailand From the Andaman Sea to the Gulf of Thailand, both beginner and advanced divers can find magnificent diving throughout this beautiful country’s coastal regions. Thailand is famous for its stunning white-sand beaches set against lush tropical forests and limestone cliffs jutting straight up out of the ocean. Thailand’s warm waters are thriving with marine life with over 200 species of fish, rays, turtles, and sharks and 80 species of colorful corals. Diving in Thailand is every diver’s dream. With its magical underwater world set against a stunning landscape and friendly locals offering delicious cuisine, it is no wonder Thailand is one of the most perfect dive destinations. © Koh Tao Divers, 84360 Koh TaoHTMS Sattakut 742, WreckThe HTMS Sattakut is a wreck that rests at a max depth of 35m, with the top of the tower at 18m. The wreck is 48 meters in length and lies just south of a neighboring pinnacle dive site, Hin Pee Wee, a favorite destination for safety and deco stops after exploring the wreck.Learn more © HOBOYA KOH TAO ほうぼう屋タオ島, 84360 Koh TaoSouthwest Pinnacle30 to 45 minutes southwest of Koh Tao, these large pinnacles range from 30 to 5 m. Sandy ocean floor with big rocks on the south side. many cracks on the pinnacles where small wildlife can be found. The shallower parts of the pinnacles are covered in magnificent anemones.Learn more © Hobo-Ya Similan, 83120 PhuketRichelieu RockRichelieu Rock is one of the most popular dive sites in Surin Islands National Park. It is a limestone reef that rises almost vertically from a depth of 35 meters, and appears only at low tide, about 1 meter above the surface.Learn more © Sea Bees Diving, 83130 PhuketShark PointShark Point is one of Phuket’s most popular dive sites. The three pinnacles of the Shark Point break the surface in a small area. The rest is submerged and covered in soft and hard corals. This is a great drift dive. You can frequently spot leopard sharks and bamboo sharks here, hence the name.Learn more © Member Diving, Koh Samui, 84320 Koh SamuiSail Rock, ThailandSail Rock is a pinnacle which rises to 15m above and 40m below the surface. Sail Rock lies between Koh Phangan and Koh tao. It’s famous for its natural underwater vertical swim through or chimney which divers can enter at 6 metres and exit at 18.Learn more © Hobo-Ya Similan, 83120 PhuketKoh Tachai Pinnacle/The DomeThe Dome is a hidden reef point located about 500m south of Tachai Island. A large dome-shaped bedrock shaped like an upturned plate is dotted around a large granite boulder. The top of is at 12 meters and the current can be the strongest in the area depending on the conditions. As a result, there are many large predatory fish such as blue and white trevally, bluefin tuna, barracudas, manta rays, and whale bays.Learn more © Sea Bees Diving, 83130 PhuketKing CruiserKing Cruiser is rated as one of the best wreck dive sites in Asia, certainly Thailand. Having sank on May 4th in 1997 this is an amazing wreck dive sitting at over 30m, the top of the wreck is now around 18m. Suitable for Advanced and technical divers. Large Schools of fish and beautiful coral.Learn more © Palm Beach Divers Co., Ltd, 81150 KrabiViking CaveViking Cave has a striking bay and a beautiful cave above the water, but the real deal is underwater a few hundred meters to the north of Viking Cave. A few years ago, the Phuket Marine Conservation department put down a beautiful artificial reef to re-establish marine life after the tsunami.Learn more © Member Diving, Koh Samui, 84320 Koh SamuiChumphon PinnacleThe main pinnacle of Chumphon Pinnacle comes as shallow as 14 meters and the deepest point of the site goes as deep as 45 meters. Offering great opportunities for divers at Open Water level through to XR level.Learn more © Sea Turtle Divers, 82220 Phang NgaStonehengeThis dive site is located at the northernmost tip of island 4. Many big rocks (boulders) where you can dive in between. Please note that there is almost always a current running at this dive site.Learn more Discover the world’s most fascinating aquatic life Aquatic life under our oceans, lakes, rivers, and streams is amazing! From microscopic zooplankton to the largest animal on earth, the blue whale, underwater life comes in all possible shapes and sizes. With 71% of the earth being covered with water, it is no wonder we are so fascinated with what lies beneath the surface. In fact, scientists estimate that there are nearly 1 million different species of aquatic animals. Freshwater ecosystems are home mainly to fish, invertebrates, and reptiles, whereas the ocean contains a wide array of marine life including fish, mollusks, crustaceans, reptiles, sharks, and marine mammals like whales, dolphins, seals, and manatees. © iStock/Extreme PhotographerWhale SharkThe whale shark is not only the largest of all sharks, but also the biggest fish in the world. It can grow up to 20 meters long, weigh 34 tons, and live for over 100 years. Its back can appear gray, brown, or blue in color and is covered with bright white stripes and spots arranged in transverse lines.Learn more © AdobeStock-MagnusZebra SharkZebra sharks are a nocturnal shark species belonging to the family of “carpet sharks” that prefer to lay sedentary along the ocean floor during daylight hours. This shark has a very distinctive body shape and coloration, trading the vertical stripes it has as a juvenile, giving its name, for dark spots set against pale skin as an adult. These graceful animals boast five distinct ridges longways down their bodies, ending in a uniquely long caudal fin. It is one of the more beautiful species and a favorite sighting amongst scuba divers.Learn more © iStock/DivepicGiant Oceanic Manta RayWith fins as wide as wings, manta rays soar along ocean currents like birds in flight, making them one of the most elegant animals of the sea. The name ‘manta’ comes from the Spanish word blanket and with a wingspan of up to nine meters, it’s easy to see how they can look like a blanket floating in the sea. Scuba diving with mantas is one of the most amazing experiences any diver can have underwater.Learn more © Shutterstock-Ed JenkinsHawksbill TurtleOften times considered the most beautiful of all sea turtle species with it’s mottled, colorful shell, the hawksbill sea turtle is one of the smaller species. These graceful creatures are the most tropical of all the turtles and can be found mainly on coral reefs throughout the warmest areas of the world’s oceans. They use their narrow, pointed beak (hence their name) to eat an omnivorous diet, feeding on sponges, sea anemones, and jellyfish.Learn more © Alamy-WaterFrameMoray EelOne of the most fascinating fish on the reef, moray eels come in nearly every size and color from the tiny, bright blue ribbon eel, the smallest averaging only 25 cm long, to the black speckled giant moray which can grow up to 4 meters in length! In fact, there are nearly 200 different species. Most morays are marine dwelling fish, but several species have been seen in brackish water, and just a few are found in fresh water. They are clearly distinguishable from the other reef fish with their long, slithering bodies, pointy snouts full of sharp teeth, and long dorsal fins that run the entire length of their bodies. No matter the species, these animals are always an exciting site to see while scuba diving.Learn more © Udo KefrigClownfishNot the best swimmers, Clownfish seek shelter in their anemone homes throughout most of the day. These distinctly colorful fish have developed a highly intricate and mutually beneficial symbiotic relationship with their anemone homes, earning them the nickname: anemonefish. Due to this sophisticated relationship, they tend to stay within a maximum radius of four meters to their anemone host in order to hide quickly within its tentacles in case of danger. If you’re lucky enough dive with clownfish you could experience these cute little fish attempting to “attack“ you to defend their anemone.Learn more © iStock-Global_PicsBarracudaDespite their protruding teeth, menacing grin, and aggressive predatory status, barracuda are actually completely passive towards divers and snorkelers, although passing by a large adult can still be intimidating to the most experienced scuba diver. They are found in tropical and temperate oceans throughout the world, preferring to cruise over coral reefs, seagrass beds, and near the surface of the water, never venturing very deep; therefore, they are commonly sighted while scuba diving.Learn more © Alamy/Reinhard DirscherlOctopusAn octopus has eight arms with suction cups which it uses as powerful tools for hunting prey, defense against attackers, and locomotion along the seafloor. They are one of the most fascinating marine animals on the planet. Every octopus has a designated “arm“ that it favors and uses most often. Because they have no inner skeleton, they are extremely mobile and can slip through the narrowest gaps and holes. Some species can even survive and move on land for a short time. Scuba diving with an octopus is an amazing and rewarding experience.Learn more Check out incredible moments water enthusiasts like you experience every day with SSI Did you just complete an SSI certification? Proudly post it! Want to support your favorite SSI Training Center and promote it to the world? Post it! Did you just have an unforgettable dive experience with your SSI Professional? Post it! We love to see the SSI family growing day by day: so upload your photo to Instagram with #wearessi or #divessi or mention @ssi_international, and it will automatically appear in the SSI Hall of Fame. We can’t wait to see your adventures today! Discover the wonders of the deep with SSI's blog Join us on an exciting journey of discovery and learn more about exhilarating diving adventures, dedicated conservation initiatives, and innovative educational opportunities that will help you illuminate the extraordinary beauty of the underwater world. Let's explore the underwater world together and delve into the hidden wonders beneath the gentle waves.