Krabi, Thailand, offers kayaking along a coastline fringed with soaring limestone cliffs, hidden caves, interior lagoons and distinctive eco-systems.

An ideal eco-tourist activity, it's the perfect way to explore this fascinating world with its secret interior 'Hongs' or caverns eroded by natural forces over millions of years. The hongs can only be accessed by canoe or kayak when the tide is just right, revealing a unique world within.

The safe, inflatable kayaks, are expertly paddled by licensed guides with a good local knowledge of the natural history and geography of the area.