Red Rock
หินแดง
Compact Pinnacle, Big Surprises
A small but lively pinnacle with surprising macro life and schooling fish, often overlooked in favor of flashier neighbors.
Depth Range
2–20m
Site Type
pinnacle
Koh Tao & Offshore
Visibility
8–20m
27–30°C
Getting There
15 min boat from Koh Tao
South of Shark Island
6 Sep
7 Sep
8 Sep
9 Sep
10 Sep
11 Sep
12 Sep
Marine Life
Notable Features
- • Reddish encrusting corals
- • Seahorse habitat
- • Good current diving
Best Time to Visit
About Red Rock
Red Rock is a compact granite pinnacle that punches above its weight. Despite its modest size, it attracts disproportionate marine life — schools of barracuda and trevally orbit the rock while patient macro hunters can find seahorses and rare nudibranchs in the crevices. The site is named for the reddish tint of its encrusting sponges and soft corals.
Tips
Good option when current is too strong at bigger sites. Pairs well with a second dive at nearby Shark Island.
Experience Required
Intermediate. Some current possible.
Location
GPS: 10.0630°N, 99.8450°E
Learn to Freedive in the Gulf of Thailand
Sites like Red Rock 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.