Koh Chang Diving Guide

11 Jan 2024
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Koh Chang, Thailand's second-largest island, is a gem of unspoiled nature, lush jungles, and crystal-clear waters. These waters are a haven for divers, offering a spectacular array of marine life, making Koh Chang an exceptional destination for diving enthusiasts. Whether you're a beginner or a seasoned diver, Koh Chang's underwater world provides a captivating and diverse range of diving experiences. In this article, we delve into the enthralling realm of scuba diving in Koh Chang, covering everything from popular dive spots to optimal diving seasons, marine life, certification processes, and how guided tours can enrich your diving adventure.

An illustration of two people diving near Koh Chang, Thailand

SCUBA Diving

Scuba diving is more than just swimming underwater; it's an immersive experience that allows you to explore the hidden depths of the ocean. Equipped with a self-contained underwater breathing apparatus (SCUBA), divers can stay submerged longer, discovering the mysteries and marvels of the underwater world. SCUBA gear includes the following pieces of equipment:

  • A Scuba Tank: A cylinder filled with compressed air or a mix of gases, providing the diver with a supply of air.
  • Regulator: A device that controls the flow of air from the tank, allowing the diver to breathe comfortably.
  • Buoyancy Control Device (BCD): A vest that helps divers maintain buoyancy underwater and on the surface.
  • Dive Computer: A device worn on the wrist or attached to the BCD, providing information about depth, dive time, and ascent rate.
  • Fins, Mask, and Snorkel: Essential for maneuverability, vision, and breathing at the surface.
  • Wetsuit or Drysuit: Depending on the water temperature, these suits provide thermal protection and prevent hypothermia. Scuba diving is not just about the equipment; it's a gateway to experiencing the tranquility and beauty of the underwater environment.

An illustration of some divers near Koh Chang, Thailand

Where to Dive Around Koh Chang

Koh Chang and its surrounding areas offer a variety of mesmerizing dive sites, each with its unique characteristics and attractions.

HTMS Chang Wreck

The HTMS Chang Wreck, the largest shipwreck in Thailand, lies near Koh Chang and is a major attraction for divers. This former warship, sunk to create an artificial reef, is now home to an abundant array of marine life and provides an exhilarating diving experience for both novice and advanced divers.

Koh Rang National Park

Koh Rang National Park, known for its crystal-clear waters and vibrant coral reefs, is a must-visit for divers in Koh Chang. The park offers a variety of dive sites suitable for all levels, featuring colorful coral gardens and a diverse range of marine life.

Koh Kra & Koh Rang Yai

Koh Kra and Koh Rang Yai are smaller islands near Koh Chang, offering serene and less crowded dive sites. These locations are perfect for divers seeking a more tranquil experience, with opportunities to spot unique marine species in their natural habitats.

When to Dive

The best time for scuba diving in Koh Chang is from November to April, during the dry season. This period offers calm seas and excellent visibility, ideal for encountering a wide range of marine life. The weather is generally sunny and pleasant, perfect for diving and other island activities.

The monsoon season, from May to October, brings heavier rainfall and rougher sea conditions, affecting visibility and accessibility of some dive sites. However, this season can also offer unique diving experiences and opportunities to see different marine life, appealing to some advanced divers.

Typical Marine Life

The waters around Koh Chang boast an impressive variety of marine life. Divers can expect to see colorful reef fish, larger predatory species, and occasional sightings of manta rays and whale sharks. Sea turtles, octopuses, cuttlefish, and vibrant nudibranchs are also common sights, enriching the diving experience in Koh Chang's underwater ecosystems.

SCUBA Certification

Koh Chang is an excellent place for scuba diving certification, with several dive centers offering PADI and SSI courses. Beginners can start with an Open Water Diver course, which includes theoretical learning, confined water dives, and open water dives. Successful completion of the course earns a globally recognized certification card.

An illustration of a group of people on a SCUBA dive tour near Koh Chang, Thailand

Diving Tours

The quickest and easiest way to get started is with a guided tour. Scuba diving tours offer the following benefits, among others:

  • Expert Guidance: Tours are led by experienced, certified dive masters or instructors who provide insights into the best dive spots, marine life, and local underwater conditions.
  • Safety: Group tours ensure safety protocols are followed, and there's immediate assistance available in case of emergencies.
  • Convenience: Dive tours handle all logistics, including transportation to and from dive sites, equipment rental, and sometimes meals and refreshments.
  • Learning Opportunities: New divers can learn from the experience of others, while seasoned divers can share tips and experiences.
  • Social Experience: Diving in a group allows you to share your experiences with fellow enthusiasts, creating a sense of camaraderie.
  • Diverse Dive Sites: Tours often visit multiple locations, offering a variety of diving experiences in one trip.

If your time is limited, or if any of that sounds intriguing to you, here are a few of our favorite diving tours on Koh Chang!

Recommended Tours

Diving at Koh Chang (Two Dives)

A picture from a diving trip near Koh Chang, Thailand

Diving at Koh Chang, a day trip featuring two dives offers an adventurous opportunity to explore the underwater world in the Gulf of Thailand. Departing from Koh Chang Island, participants can discover the diverse marine environments that this scenic destination has to offer. The two dives typically occur at different dive sites, each known for its unique underwater landscapes and marine species. This excursion allows divers to witness vibrant coral reefs, encounter tropical fish, and explore underwater rock formations, providing a memorable and immersive experience in Koh Chang's crystal-clear tropical waters. It's an ideal choice for divers seeking a full day of underwater exploration and the chance to appreciate the underwater beauty of this picturesque island.

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One Day Bubble Maker in Sea

A picture from a diving trip near Koh Chang, Thailand

The 1-Day Bubble Maker experience in the sea at Koh Chang offers children aged 8 and above an exciting introduction to scuba diving. Located on Koh Chang Island, this program provides kids with specially designed scuba equipment and the guidance of professional dive instructors. While it doesn't lead to scuba certification, it allows children to experience the thrill of breathing underwater and explore the underwater world in a safe and supervised environment. It's a fun and confidence-building activity that introduces young adventurers to the wonders of the sea in the pristine waters of Koh Chang.

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Scuba Diving at Unawatuna

A picture from a diving trip near Koh Chang, Thailand

Scuba diving at Unawatuna, located along Sri Lanka's southern coast, offers a thrilling underwater experience in the Indian Ocean. This destination is celebrated for its picturesque coral reefs, abundant marine life, and clear waters, making it a popular spot for divers of all skill levels. Divers can explore vibrant coral gardens, encounter diverse fish species, and even have the chance to see turtles and rays. With professional dive operators and instructors available, Unawatuna provides an excellent opportunity to discover the captivating marine ecosystems of the Indian Ocean while enjoying the pleasant tropical waters of Sri Lanka.

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Koh Chang Freedive Trip

A picture from a diving trip near Koh Chang, Thailand

The Koh Chang Freedive Trip, commencing from Koh Chang Island, is an exhilarating underwater adventure that allows participants to explore the Gulf of Thailand without the use of traditional scuba gear. Freedivers, equipped with specialized training, techniques, and safety measures, can delve into the depths of the ocean while holding their breath. This unique experience offers an intimate connection with the marine world, allowing participants to discover vibrant coral reefs and encounter diverse marine life in a serene and natural setting. It's a thrilling way to appreciate the underwater beauty of the Gulf of Thailand and the freedom to explore its depths without the constraints of scuba equipment.

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Snorkeling trip at Koh Chang

A picture from a diving trip near Koh Chang, Thailand

The Koh Chang Freedive Trip, commencing from Koh Chang Island, offers an exhilarating and unique way to explore the underwater world of the Gulf of Thailand. Unlike traditional scuba diving, freediving involves exploring the depths of the ocean with only a single breath, making it a truly immersive and natural experience. Participants, equipped with specialized training and safety measures, can venture into the clear waters surrounding Koh Chang to discover the vibrant coral reefs and diverse marine life that call this area home. It's an adventure that allows for a deeper connection with the marine environment, providing a sense of freedom and oneness with the sea. Whether you're an experienced freediver or new to the sport, the Koh Chang Freedive Trip offers an unforgettable and serene exploration of the ocean's beauty.

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Diving Around Koh Chang

Scuba diving in Koh Chang is an adventure that combines exploration with the beauty of the marine world. Whether you're getting certified or joining a guided tour, Koh Chang's underwater landscapes provide a remarkable diving experience. Dive tours offer a blend of safety, convenience, and social interaction, ideal for both novice and experienced divers. As you plan your dive journey in Koh Chang, consider the unique aspects of each dive site and the enriching experience that a scuba diving tour can offer. Dive in and explore Koh Chang's underwater world, a journey that promises both adventure and discovery. Don't forget to check out our Facebook page and related articles below for more activities to do on Koh Chang and elsewhere in Thailand!


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