Two areas of sea either side of Kapiti make up Kapiti Marine Reserve, established in 1992. People are welcome to use the reserve or swimming, boating, diving, and other recreational pursuits, but fishing, both recreational and commercial, and the removal of marine life or natural features are strictly forbidden. What to see The underwater scenery within the marinerve is generally regarded as some of the finest in the greater Wellington region and one of the best ways to get close to the marine life is to get into the water. Those with a mask and snorkel could explore the rocks close to the shore of Kapiti Island.
Scuba diving is the most rewarding on the western side and north end of the island.
It is also unusual to find the three common marine habitats of the Marlborough Sounds and Wellington region in such a confined area. The boulder bottom, sheltered reef, and sand bottom habitats are home to a rich variety of marine life. Starfish, corals, anemones, octopus and reef fish such as butterfish, blue cod and red mullet are also residents of these waters. Visitors to Kapiti's exceptionally clear waters include ocean fish like blue moki and kingfish and on occasions rare and subtropical fish such as the spotted black groper, drumfish and magpie perch.