By ship
Krabi is mostly coast and islands, so you'll be spending quite some time on boats when getting around.
The most common boat type for shorter hops is the long-tail boat reua hang yao, which true to the name has the propeller at the end of a long 'tail' stretching from the boat. This makes them supremely manoeuvrable even in shallow waters, but they're a little underpowered for longer trips and you'll get wet if it's even a little choppy.
Songthaew (Public Passenger Pick-Up Vehicles)
Various tourist attractions can be conveniently reached by local Songthaew. Such attractions include Ban Huai To, Ban Nong Thale, Ban Khao Thong, Hat Noppharat Thara, Susan Hoi, Ao Nang, Ban Khlong Muang, Ban Nai Sa, Amphoe Khao Phanom, Amphoe Nuea Khlong, Amphoe Khlong Thom, Ban Bo Muang, Ban Hua Hin, Ban Khlong Phon, Amphoe Lam Thap, Amphoe Ao Luek, and Amphoe Plai Phraya. The local Songthaews depart from the Vogue Department Store on Maha Rat Road. Trips to other destinations can be made by taxi and rental car.