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Big Blue Tech

SDI Dive Shop 📍 Koh Tao, Thailand ★★★★★ 5.0 (5,323 reviews)

Photo: (c) Tine Kinn Kvamme, some rights reserved (CC BY) · via iNaturalist

Big Blue Tech is a dive centre on Sairee Beach, Koh Tao, Thailand, founded in 1991. It is affiliated with SSI, SDI, and TDI. The centre offers courses from SSI Open Water Diver through to Instructor and Divemaster, as well as technical training including Sidemount, Advanced Wreck, Decompression Procedures, and Advanced Nitrox. It suits divers from beginners to experienced technical divers.

Courses offered

Course Price
SSI Open Water Diver –
Sidemount Diver –
Advanced Wreck Diver –
Decompression Procedures –
SSI Instructor –
Divemaster –
SSI Scuba Diver –
Advanced Nitrox –
Enriched Air Nitrox –
Fun dive from THB 2,000

Diving with Big Blue Tech

Big Blue Tech operates its own fleet of dive boats, including a dedicated Tech Diving boat, according to the centre. Nitrox is available. Diving is conducted in English. The centre visits dive sites including Chumphon Pinnacle, No Name Pinnacle, Twins, Red Rock, Southwest Pinnacle, Hin Pee Wee, Junkyard, Sail Rock, Shark Island, Mango Bay, Japanese Gardens, HTMS Hanhak Sattru, Laem Thien Caves, Aow Leuk, and Lighthouse Bay.

On Google it holds an average rating of 5.0 from 5323 reviews.

Sea temperatures in the surrounding waters range from 28°C in January to 31°C in May. Species recorded near these coordinates include Whale Shark, Mourning Dorid, Unidentia aliciae and Indian Caloria.

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At a glance

  • 6 dive sites within 60 km: Sairee Reef (1 km) · Htms Sattakut (1 km) · White Rock (2 km) · Japanese Garden (2 km) · Twins (2 km) · Hin Pee Wee (3 km)
Certification SDI Dive Shop
Courses offered Scuba Diver, Open Water Diver, Advanced Open Water Diver, Rescue Diver, Divemaster, Enriched Air Nitrox
Location Koh Tao, Thailand
Address Sairee Beach, 14, 148, Koh Tao, Koh Phangan, สุราษฎร์ธานี 84360, Thailand
Phone 077 456 415
Google Rating ★★★★★ 5.0 5,323 reviews
GPS 10.1022°, 99.8275°
Operator ID 134cf087-6383-4e60-a91c-dd6e654e5937

Sea temperature through the year

Average sea surface temperature at the coordinates of Big Blue Tech, Koh Tao, Thailand, by calendar month. The water is warmest in May at 31.4 °C and coldest in January at 28.1 °C, a spread of 3.3 kelvin over the year. Every month of the year averages 25 °C or more.

MonthJanFebMarAprMayJunJulAugSepOctNovDec
Sea temperature (°C)28.128.729.230.831.430.430.130.029.729.929.528.5

By season, the four quarterly averages at this location are spring (March to May) 30.5 °C, summer (June to August) 30.2 °C, autumn (September to November) 29.7 °C and winter (December to February) 28.4 °C.

Sea surface temperature from Open-Meteo Marine (CC BY 4.0), daily model means 2022-11 to 2024-12, sampled at the coordinates of this dive centre. Values are monthly averages of the daily means, not forecasts.

Marine life recorded in this area

Research-grade observations from iNaturalist near these coordinates.

Whale Shark (Rhincodon typus)
Whale Shark Rhincodon typus A very large, slow-moving shark with a broad, flattened head, a wide mouth, and a distinctive pattern of pale spots and stripes on a dark grey back.to 18 m · surface to 100 m · day and nightopen water, often near the surfaceObserve from a respectful distance; its path is predictable as it swims with its mouth open to filter feed. (c) Dan Schofield, some rights reserved (CC BY) · observation
Mourning Dorid (Jorunna funebris)
Mourning Dorid Jorunna funebris A nudibranch with a black body covered in small white or yellow spots, and a ring of black-tipped gills on its back.to 5 cm · 5-25 m · day and nightsponges on coral reefs and rocky slopesLook for its distinctive black and white pattern on sponges, its primary food source. (c) Tine Kinn Kvamme, some rights reserved (CC BY) · observation
Unidentia aliciae (Unidentia aliciae)
Unidentia aliciae Unidentia aliciae A tiny, translucent sea slug with a white body and scattered orange-yellow spots, often seen crawling on algae or hydroids.to 1.5 cm · 5-20 m · day and nightalgae and hydroids on reef walls and slopesLook for its minute, bright spots on low-growing algae, especially in areas with mild current. (c) Tine Kinn Kvamme, some rights reserved (CC BY) · observation
Indian Caloria (Caloria indica)
Indian Caloria Caloria indica A small nudibranch with a translucent white body covered in orange-tipped cerata, often seen crawling on hydroids.to 2 cm · 5-25 m · day and nighthydroid colonies on reef walls and overhangsLook closely on hydroid-covered surfaces; its colouration provides camouflage against its food source. (c) Tine Kinn Kvamme, some rights reserved (CC BY) · observation