Lang Tengah is a small island only 30 min away from Perhentian islands and just a few minutes from Redang Island. The aquatic life encountered here is very similar to that of Redang Island, but slightly different from that of Perhentian island. However it is not as well known as Redang and there are much fewer divers here. The corals are in excellent condition since these reefs have hardly been visited by divers or snorkelers. This coral garden is matured and become a natural habitat for most of the sea creatures. The visibility is excellent, often ranging between 20 to 35 metres.

There's a good place to deep dive up to 30m with lots of different kind of fish including snappers, moray eels and bamboo sharks. Usually the visibility is about 30m above the thermocline, which is often inexistent. So you can see the bottom from the surface!

Other species that can be seen here are turtles and parrotfish and sometimes a leopard shark. There are schools of snappers and fusiliers, there are lion fish and nudibranches and colorful anemones with clownfish. The hard corals on these sites are stunning. There are lots of fire corals and gorgonians as well as staghorn coral and table corals.
In between dives you can snorkel off the beach and people keep seeing eagle rays and black tip reef sharks.