Tung Ping Chau Marine Park is the fourth Marine Park in Hong Kong. It was designated on the 16 November 2001. The marine park occupies a sea area of about 270 hectares which enclosed the small island Ping Chau in the Mirs Bay on the northeastern water of Hong Kong.

Tung Ping Chau Marine Park has a biologically diverse marine ecosystem. On the inner Tai Tong Wan and A Ma Wan bays, over 30 species of hard corals are recorded. Meanwhile, over 130 reef-associated fishes and more than 100 species of marine invertebrates were recorded in the Marine Park. In terms of marine flora, over 40 species of marine algae are found in Tung Ping Chau Marine Park. Along the coast of Lung Lok Shui, it is dominated by brown, red and green algal bed which are considered as the best algal beds in Hong Kong.