老圍
Mangrove plants play an important role in maintaining the stability and ecological balance of coastal ecosystems, but they have been destroyed in the past due to reclamation and infrastructure development in Hong Kong. With regard to this, OPCF launched a Mangrove Planting Day with the Agriculture, Fisheries and Conservation Department on 6 May 2000 to conserve mangroves in Hong Kong. Mangroves were planted in Kei Ling Ha Lo Wai, Sai Kung by helpers from Scout Association of Hong Kong (香港童軍總會) and OPCF volunteers.