Turtle Group National Park is a remote group of islands where visitors can engage in nature-based activities, such as birdwatching and camping, in a natural, undeveloped setting.

The park includes the Turtle Group of islands, Nymph Island and the Pethebridge Islets. Nine islands in total are protected within the Turtle Group National Park.

Nymph Island is a 65ha, sand and coral rubble island with extensive mangroves. Many 3700 year old micro atolls are contained within a tidal, internal lagoon drained by a narrow creek. Nymph Island became national park due to this unusual lagoon formation.

The Turtle Group of islands are small, vegetated sand and shingle cays. They show different levels of cay formation from a simple sand cay to cays with well developed beach-rock, shingle banks. The islands vegetation varies but includes areas of grassland, woodland, closed forest, vine forest and mangroves.