Shark Bay
เทียนอ๊อก
Baby Sharks at Sunset
A shallow sandy bay where juvenile blacktip reef sharks and turtles can be spotted from the surface — perfect for snorkeling.
Depth Range
2–8m
Site Type
bay
Koh Tao & Offshore
Visibility
5–15m
27–30°C
Getting There
Shore entry on Koh Tao
South coast of Koh Tao
8 Sep
9 Sep
10 Sep
11 Sep
12 Sep
13 Sep
14 Sep
Marine Life
Notable Features
- • Blacktip shark nursery
- • Turtle feeding grounds
- • Snorkeling from beach
Best Time to Visit
About Shark Bay
Shark Bay (Thian Og) is a calm, shallow bay on Koh Tao's southern coast where juvenile blacktip reef sharks use the warm shallows as a nursery. Snorkeling from the beach, you can often spot baby sharks cruising over the sand at just 2–3m depth. Green turtles are also frequent visitors, feeding on the seagrass patches.
Tips
Go early morning or late afternoon for the best shark sightings. Stay quiet and still — splashing scares them away.
Experience Required
None required — snorkeling accessible.
Location
GPS: 10.0650°N, 99.8320°E
Learn to Freedive in the Gulf of Thailand
Sites like Shark Bay are what the Gulf has to offer. Get certified with us on Koh Samui — train at Sail Rock and Koh Tao in groups of no more than 3, skip the Koh Tao ferry, and dive the best of the region.
New to freediving? Get the free beginner's guide first.