ON THE WATER
Meet the Fleet
Big Blue Diving operates three main dive boats, supported by two longtail shuttle boats. Together, they help divers get from Koh Tao’s shores to the spectacular dive sites of the Gulf of Thailand.
GO
BIG BLUE.
From your first breath underwater to your next unforgettable dive. Discover the reefs, island atmosphere and underwater adventures of Koh Tao with Big Blue Diving.
Find your dive →
Based on Koh TaoGulf of Thailand
Scuba diving & coursesFrom first dives to advanced
Welcoming dive communityLearn, explore and meet fellow divers
ISLAND PARADISE
LEARN TO DIVE
KOH TAO MARINE LIFE
MEET OUR PARTNERIsland life.
Island life.
Underwater adventure.
On the island of Koh Tao, Big Blue Diving brings together dive training, guided underwater experiences and the welcoming atmosphere that makes the Gulf of Thailand such a memorable place to explore.
Whether you're curious about scuba diving for the first time, looking to work towards a certification or simply keen to get back beneath the surface, Big Blue offers a starting point for your next adventure.
Eight Winds Adventures is proud to introduce Big Blue Diving to travellers looking for local expertise and experiences worth travelling for.
THE BIG BLUE FLEET
Meet the fleet.
Every great dive begins with a journey. Step aboard with Big Blue Diving and head out across the turquoise waters of the Gulf of Thailand, where spectacular dive sites, new friendships and unforgettable underwater adventures await.
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DISCOVER KOH TAO UNDERWATER
Explore the dive sites.
Swipe through some of the best-known dive locations around Koh Tao. Actual itineraries are set by Big Blue according to conditions, schedules and diver experience.
Images are illustrative, not photographs verified as taken at the named dive sites. Marine life sightings and departures are not guaranteed.
PICK YOUR UNDERWATER ADVENTURE
Explore the dive-site map.
Explore four featured dive sites around Koh Tao, with distant Sail Rock shown in a separate inset. This illustrated map is not a navigational chart.
FEATURED DIVE SITE
Chumphon Pinnacle
A submerged granite pinnacle northwest of Koh Tao, renowned for huge schools of fish and deeper-water encounters. Big Blue recommends experience for the more demanding sections.
Read Big Blue's dive-site guide ↗Dive sites are selected according to conditions, schedules and certification requirements. Illustration only; dive-site locations and distances should not be used for navigation.
SIGNATURE DIVE EXPERIENCES
Go beyond the ordinary.
From offshore pinnacles to an underwater wreck, discover some of the memorable dive sites around Koh Tao. These are featured possibilities, not guaranteed departures: Big Blue selects dive sites based on schedules, weather, sea conditions and diver suitability.
01 / SIGNATURE TRIP
Sail Rock
A standout offshore dive adventure known for dramatic rock formations and rich marine life. Ask Big Blue about current Sail Rock trips and suitable certification levels.
Explore with Big Blue ↗
02 / BIG FISH
Chumphon Pinnacle
Explore a spectacular submerged pinnacle, famous for schooling fish and the possibility of larger marine life. Sightings are never guaranteed.
Explore with Big Blue ↗
03 / WRECK EXPLORATION
HTMS Sattakut Wreck
Discover an artificial reef formed around a sunken naval vessel. This is a more advanced option, subject to qualifications and conditions.
Explore with Big Blue ↗
04 / REEF LANDSCAPES
Southwest Pinnacle
Swim among striking underwater rock formations, anemones and abundant reef life on a guided dive suited to your experience.
Explore with Big Blue ↗Dive sites and wildlife encounters are subject to conditions and availability. Certification and experience requirements vary. Photographs are illustrative and will be replaced with Big Blue's supplied imagery.
LEARN TO DIVE & EXPLORE MORE
Every diver starts somewhere.
Whether you're trying scuba for the first time or ready for a new challenge, Big Blue offers diving experiences for different ability levels.
05 / FIRST-TIME DIVERS
Basic Diver
Try scuba diving with professional supervision, without committing to a full certification course.
Explore with Big Blue ↗06 / GET CERTIFIED
Open Water Diver
Learn the foundations of scuba diving and work towards an internationally recognised entry-level certification.
Explore with Big Blue ↗
07 / AFTER DARK
Night Diving
Experience the underwater world after sunset, subject to suitable training, experience and local conditions.
Explore with Big Blue ↗Course names, training requirements, availability and prices are confirmed by Big Blue Diving.
MORE THAN A DIVE CENTRE
A bigger world of diving.
With multiple dive boats and a wide choice of courses and excursions, Big Blue has options for newcomers, qualified divers and those looking to take diving further. Ask the team about professional training, specialist courses and marine conservation opportunities.
See all Big Blue options ↗WHO WILL YOU MEET?
Life beneath the surface.
From swirling schools of fish to rare ocean giants, the waters around Koh Tao support remarkable marine life. These photographs come from Big Blue Diving's own published marine-life guides.
RARE ENCOUNTER
Whale sharks
The ocean's largest fish is an occasional visitor to Koh Tao. Sightings are special and never guaranteed.
Meet the whale shark ↗
SCHOOLING FISH
Trevally
Watch fast-moving predators gather in dramatic schools around Koh Tao's offshore pinnacles.
Discover trevally ↗
REEF WILDLIFE
Blacktip reef sharks
These shy sharks favour shallow reef habitats. Encounters depend on the location and conditions.
Discover reef sharks ↗Photographs sourced from Big Blue's official website with the operator's permission; no wildlife encounter is promised.
WHY KOH TAO?Small island.
Small island.
Big underwater world.
Warm water, island rhythms and a community built around the sea. Koh Tao has long attracted people who want to learn, improve their skills and discover what lies beneath the waves.
Spend your days in the water and your evenings enjoying island life. With Big Blue Diving, the next chapter of your trip could begin underwater.
Discover Big Blue ↗HOW IT WORKSSimple to explore.
Simple to explore.
Easy to connect.
01. Get inspired
Explore the experiences and find the kind of diving adventure that suits you.
02. Speak to Big Blue
Use Big Blue's own booking site to confirm current courses, dates, prices and any certification requirements.
03. Dive in
Big Blue handles your booking, payment and experience directly, so you can focus on the adventure.
EWA's partner referral tracking is being finalised. Until it is confirmed, the links on this page lead directly to Big Blue's official booking website without claiming tracked EWA attribution.
GOOD TO KNOW
Before you take the plunge.
Can I try diving without a certification?
Big Blue can advise on introductory scuba experiences and any age, medical or safety requirements. Contact the operator before booking.
I'm already certified. Can I join guided dives?
Ask Big Blue about current guided diving options, required certification and suitable dive sites.
Who handles my booking and payment?
Big Blue Diving handles bookings, payment, confirmation and the diving experience directly.
How do I check prices and availability?
Visit Big Blue's official booking website for the latest options and contact their team with any questions.
BIG BLUE DIVING × EIGHT WINDS ADVENTURESYOUR NEXT ADVENTURE
YOUR NEXT ADVENTURE
IS BELOW THE SURFACE.
Discover a different side of Koh Tao. From first-time scuba experiences to offshore pinnacles and wreck exploration, Big Blue Diving is ready to help you find your next adventure.
Explore Big Blue Diving ↗You'll be directed to Big Blue Diving's official booking site. Big Blue operates the activities and handles customer enquiries, bookings and payments.