Because of the many steep limestone karsts that surround the area, Krabi boasts some of the best rock climbing in the world and is the premier site in Asia. With around 700 bolted routes to choose from, ranging from beginner to the very tricky and all in the most glorious surroundings it is easy to see why. The majority of the climbs are around the Railay beach area, with just a short walk or boat ride between them. There are several climbing schools to choose from if you are a beginner. You can go for just a taster session, or for a longer course over several days. For those with more experience the schools can offer you a guide and hire of equipment.
Sea Kayaking is a great way to see around parts of the coastline inaccessible in any other way. It is possible to hire kayaks on some of the beaches around the area, and make your own way along the coast to explore the bottom of the limestone cliffs, and find small caves, inlets and beaches.
There are however, several local tour companies which will take you to specific sites. At Ao Thalane, it is possible to kayak through a mangrove forest, with limestone cliffs on either side. Monkeys, crabs, mud-skippers, birds, and all sorts of other wildlife watch as you go past. Another site is the Hong Islands, where there is a wonderful lagoon in the middle of the big island, which you can paddle into. Then you can snorkel and swim and lunch on the beach, before paddling off to see some more.