Pulau Kalampunian Damit, or better known as Snake Island is one of the three islands that make up Pulau Tiga Park. This small island is composed of sandstone, limestone and shale, and is covered in thick vegetation.

This island is unique, for it is a breeding site for sea snakes (sea kraits) that can be easily found resting under rocks, in cracks or on trees all over the island. They usually rest during the day and swim back into the ocean at night. Although their venom is deadly, they have a relatively small mouth and are actually very timid.

They can be dangerous only when mishandled or stepped on. The island was featured twice: first in a 1992 Oxford Film documentary film titled Eagle and the Snake and again in CBS' Survivor series shot in 1999. Its surrounding natural environment and native inhabitants are protected by the Government of Malaysia, and a special permit is required to visit it.