Twin Rocks - Koh Tao

Twin Rocks is a comfortable, easy dive, and honestly, one of our favourite spots for a relaxed afternoon in Koh Tao. It’s not going to blow your mind with massive pelagics or dramatic drop-offs, but for sheer fish action, it's hard to beat. We love dropping in on the sheltered side. The water here often feels like a warm bath, gently rocking you over the sandy bottom between the two main granite boulders. You'll find schools of butterfish that shimmer like liquid silver, and a constant ballet of East-Indies parrotfish grazing on the rocks. Keep an eye out for the delicate blennies peeking from their holes; they’re surprisingly curious. We always seem to spot a blacktip reef shark cruising the outer edges too, particularly if you dive early in the morning before the crowds arrive. The staghorn corals are coming back beautifully in places, attracting swarms of Miry's demoiselles. It's a fantastic site for newer divers building confidence, or for photographers who want to spend time getting close to smaller reef life without battling strong currents.

Location
Koh Tao, Thailand, Southeast Asia
Coordinates
10.115929, 99.812004

Marine Protected Area: Suratthani Environmental Protected Area

Best Time to Dive in Koh Tao

The warmest water temperatures in Koh Tao occur in May, averaging 30.6°C. The coolest conditions are in January at 28.3°C.

Monthly Water Temperatures

  • January: 28.3°C
  • February: 28.6°C
  • March: 29.3°C
  • April: 30.2°C
  • May: 30.6°C
  • June: 30.2°C
  • July: 30.0°C
  • August: 29.7°C
  • September: 29.4°C
  • October: 29.2°C
  • November: 29.3°C
  • December: 28.6°C

Nearby Dive Sites in Koh Tao

Nearest Dive Centres to Twin Rocks

Marine Life in Koh Tao

Home to 56 recorded species including 35 reef fish, 11 sharks & rays, 4 other, 2 hard corals, 1 clams & mussels, 1 sea urchins.

Notable Species

Recommended Packing List for Twin Rocks

Based on average water temperature of 29.5°C, currents 14 cm/s.

  • Shorty or Rashguard - warm 29°C water needs minimal exposure protection
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories