Both islands display scant vegetation amidst natural, almost artistic, rock structures.
The little caves and crannies found here are homes to swifts.
The nest they build are a special grade of birds nest which are treasured for their nutritional value and are accordingly highly prized.
Bird's nests collectors build authentic huts on these rocks.
Of these two islands, Koh Ngam Noi offers more attractive landscapes with huts built on different levels of rocky headland.
The best time for photography is between 2.00 to 3.00 pm when the sun is shining. These two islands are about 15 minutes apart by boat and Koh Ngam Noi, the nearest island from Hin Lak Ngam, is about 25 minutes away.
The dive schedule for these two sites is planned according to which way the wind blows.
The dive boat will initially moor on the lee side where divers take a rest and gear up.
When they are ready to dive, the boat will steer towards the exposed part of the island, allowing the divers to get into the waters and double back to moor in the calm bay.
Dive masters take their bearings and guide divers through an underwater tour back to the dive boat.
Characteristics
Narrow "swim throughs" offer a view of a healthy collection of soft and hard corals at these sights.
Varieties of big resident fish found under rock ledges and little caves.
Visiting fish are more apparent during the flow of the current.

Hin Pae (Hin Lak Ngam)
This is the second rock outcrop dive site of Chumphon and is located at the northernmost area between the four popular dive sites of Chumphon.