A dolphin concern group published on its social media page that one chinese white dolphin (Sousa chinensis) and four finless porpoises (Neophocaena phocaenoides) were found stranded between Saturday the 17th and Monday the 19th of February. Autopsy scans found food remains in the dolphins, showing they were not starved to death. However, they showed multiple fractures. It is feared they were hit by motorboats as they had injuries on their heads and necks.
One finless porpoise was almost cut in half by what is thought to have been a boat propeller.
The adult Chinese white dolphin was found stranded at Mo To Chau. It was a 2.5-meter female, at least 10 years old, and with signs of choking, bone fractures and serious bone dislocation. The death of an adult female is a great loss to the species’ population growth, with numbers in Hong Kong down from over 120 some years ago to 47 at present.
In the past three years there have only been 3-4 stranded cetaceans in tyhe months of January and February. This year, more than 10 dead cetaceans have been discovered in the same period.
High-speed boats are always a big threat to dolphins and some might be hit by propellers and never be discovered. The Dolphin Conservation Society of Hong Kong (HKDCS) has urged the government to launch a speed restrictions on boats around dolphin and porpoise habitats or even ban them from entering these areas.
According to the HKDCS only one new-born Chinese white dolphin was recorded last year. With the loss of another adult female dolphin, there is a dwindling chance of recovery of the local population.
A Chinese white dolphin (Sousa chinensis) was found dead on the morning of the 19th of July (2017) floating in the sea near Cheoc Van beach in Coloane.
Local animal rights group Anima (Macau) was alerted to the presence of the deceased animal by a concerned citizen. Anima president, Albano Martins, speculated that the dolphin may have collided with a maritime vessel in the Pearl River Delta estuary.
The Anima president also said that Macau’s Marine and Water Bureau has retrieved the deceased animal and is arranging for the body to be disposed.
Sightings of dead dolphins off the coast of Macau are a relatively rare occurrence, but several have been documented in recent years.
Wildlife experts in south China are trying to rescue an endangered Chinese white dolphin (Sousa chinensis) that is in worsening health after swimming into a tributary of the Pearl river a week ago. The dolphin is approximately 30 years old and swam into the Baisha Rivernear Jiangmen in Guangdong Province on the 1st of February. It is now in a stretch of water about 100 km from the sea. “[…] the skin of the dolphin is festering and its health is deteriorating … its moving area is shrinking,” said Feng Kangkang, a worker with Jiangmen Chinese White Dolphin Nature Reserve, on Thursday. The team is watching the dolphin around-the-clock and recording its health condition, according to the Guangdong provincial ocean and fishery department. Dubbed the “giant pandas of the sea” by some, the Chinese white dolphins are mainly scattered in a few coastal areas where they exist in small numbers. About 2,000 are known from areas around the Pearl River, including HK which at the last count, was down to about 60 dolphins. (Photo/Xinhua)
A sub-adult male finless porpoise measuring 1.43 m in length was found stranded at South Channel, Tap Mun last Sunday (17th August 2014). Tap Mun (also known as Grass Island) is in the northeast New Territories close to the Hoi Ha Wan marine park. According to marine police it was found entangled in fishing nets. The presence of net entanglement, CT scan images by Ocean Park Conservation Fund and the necropsy indicate that the porpoise as a result of net entanglement and likely drowned. Vets also found multiple abscesses I. Both left and right lungs suggesting chronic pneumonia. The porpoise also had lesions and bruising that suggest struggling in a net.
Finless porpoises (Neophocaena phocaenoides) along with the Chinese White dolphins (Sousa chinensis) are the only two cetaceans resident all year round in Hong Kong waters. This is the 34th cetacean stranding in 2014. Entanglement in fishing nets is the top cause of cetacean strandings in Hong Kong.
Source: Ocean Park Conservation Fund