On Koh Kradan there is no actual pier for the arrivals and departures of the ferries. Instead, the ferry/speedboat waits offshore for the local longtail boats to transfer the visitors to and from the island. To board or get off your speedboat, you will need to walk inside the water to/from the beach. Please note that the water height varies according to the tide so your legs might get wet. Anyway, it's all part of the fun!