They comprise scenic coastal areas, seascapes and important marine habitats.
Marine parks and reserve are managed for conservation, education, recreation and scientific studies.
Diving, snorkeling, swimming, canoeing, sailing, underwater photography and school visits are popular activities in marine parks.
In marine reserve, recreational activities are prohibited and the area is protected for nature conservation and scientific studies.
The major concerns in relation to Hong Kong's marine parks, as announced by various green groups include: Green groups point towards the following factors as needing attention.