Cape D'Aguilar Marine Reserve, Marine reserve in Southern District, Hong Kong.

Cape D'Aguilar Marine Reserve is Hong Kong's only marine reserve, designated in July 1996. It covers about 20 hectares at the south-east tip of Hong Kong Island, mainly between Kau Pei Chau and the rocky coast. The reserve protects rocky shores and subtidal habitats, and is managed by the AFCD with help from the Swire Institute of Marine Science.

The area was designated a Site of Special Scientific Interest in 1991, then became Hong Kong's only Marine Reserve in July 1996 under the Marine Parks Ordinance. It protects the rocky shores and subtidal habitats between Kau Pei Chau and the coastline, and is managed by the Agriculture, Fisheries and Conservation Department with help from the Swire Institute of Marine Science of the University of Hong Kong.

The reserve reflects a long connection between the sea and local people across generations. A whale skeleton from 1955 stands as a reminder of when residents depended heavily on fishing and ocean resources.

Access to parts of the reserve passes through a restricted zone around a transmission station, so the public cannot enter freely; hikers get around it on a side hill path. No public sanitary facilities are provided, and visitors are asked to stay away from the water's edge. Fishing, swimming, diving and collecting organisms are banned without an AFCD permit.

The whale skeleton by the Swire Institute is a 6.4 m juvenile male fin whale that was found floating near Ming Shan Wharf in Victoria Harbour on 12 April 1955 and was later handed to a University of Hong Kong research vessel. Its flesh was carved up the next day as food for refugee camps, drawing up to 1,000 onlookers. It has stood at Cape D'Aguilar since 27 June 1991 and is often mistaken for Hoi Wai, the Ocean Park orca.