Category Coasteering
Although I haven’t been there myself, Tyler, Colin, and others have been. Therefore adding information for your reference (several readers asking).
Surprisingly interesting rock formations and fun scrambling on the Westernmost coast of the island. Everything fine but for the turbid water.
Repulse Bay to Chung Hom Kok is coasteering introductory classic. If you are ready to swim long there is a more impressive route around.
East peninsula of Lamma coasteering. Relatively complex fun scrambling, a lighthouse, the Dinosaur Egg rock, a small arch to swim through.
Cheung Chau offers a picturesque coastline perfect for coasteering. The North section is an intermediate route with nice scrambling.
White sand beaches, crystalline water, good snorkeling and a fun coasteering route in the Southernmost islands in Thailand.
Cheung Chau offers a picturesque coastline perfect for coasteering. In addition South West section is relatively easy.
An excellent route including tons of caves, dramatic cliffs, jumping spots, waterfalls. Only suitable for really confident swimmers/coasteers.
Another short coasteering route, around Long Ke in Sai Kung. You could combine it with the previous one for a long day with nice views all around.