In 1998, the Similan Islands Marine National Park was expanded from its original nine islands to include uninhabited Ko Bon and Ko Tachai. The west ridge of Ko Bon is the number-one place in Thailand to see manta rays, as the coral is still in fine condition and so attracts many fish. Currents here can be strong, so it is often best for experienced divers.
Lonely Planet's must-see attractions
Similan Islands Marine National Park
15.11 MILES
This beautiful 70-sq-km marine national park is known to divers the world over. Lying 70km offshore from Phang-Nga Province, it has smooth granite islands…
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16.49 MILES
Twin Peaks at Ko Tachai is one of the best dive sites on the Similans, although strong currents mean it is generally reserved for experienced divers…
-
20.91 MILES
From the Similan Islands Marine National Park Visitors Centre, you can walk for 20 minutes through forest to this viewing point, a great place to catch…
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16.35 MILES
On Ko Similan there’s a short, steep scramble off the main beach to the top of Sail Rock, though during daylight the path gets completely packed with day…
-
15.83 MILES
For a brief taste of Ko Similan's jungly interior, there's an easy 2.5km hike through the forest to this viewpoint that offers ocean vistas.
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16.12 MILES
The biggest of the Similan Islands has hikes to viewpoints; overnight stays are now banned.
Nearby Phang-Nga Province attractions
1. Similan Islands Marine National Park
15.11 MILES
This beautiful 70-sq-km marine national park is known to divers the world over. Lying 70km offshore from Phang-Nga Province, it has smooth granite islands…
15.83 MILES
For a brief taste of Ko Similan's jungly interior, there's an easy 2.5km hike through the forest to this viewpoint that offers ocean vistas.
16.12 MILES
The biggest of the Similan Islands has hikes to viewpoints; overnight stays are now banned.
16.35 MILES
On Ko Similan there’s a short, steep scramble off the main beach to the top of Sail Rock, though during daylight the path gets completely packed with day…
16.49 MILES
Twin Peaks at Ko Tachai is one of the best dive sites on the Similans, although strong currents mean it is generally reserved for experienced divers…
20.91 MILES
From the Similan Islands Marine National Park Visitors Centre, you can walk for 20 minutes through forest to this viewing point, a great place to catch…