A stranded female west Pacific finless porpoise (Neophocaena phocaenoides sunameri) was found in the shallows of Bohai Bay, China, on 30 March 2008. It was moderately dehydrated. After transportation to Beijing Aquarium, medical treatment and rehabilitation were conducted. Under microscopic examination, the ova of Nasitrema spp. and Zalophotrema hepaticum were found in the feces. This is a new host record for the trematodes Nasitrema spp. and Z. hepaticum infecting a finless porpoise. Antibiotics were administered to prevent secondary infection, while supportive therapies, including fluid and electrolyte supplements, were provided. The porpoise was released on 6 June 2008, approximately 18.5 km offshore in Xingang, Tianjin, China. This is the first report of a rescue, rehabilitation, and release of a stranded marine mammal in Bohai Bay, China.