Category Archives: Whales & Dolphins

Cetaceans from Hong Kong waters: whales, dolphins and porpoises sighted in Hong Kong. Cetacean conservation. Guide to Hong Kong cetaceans.

Rescued rare dolphin released back to sea

Xinhua reported on the 22nd of July (2017) that a rare rough-toothed dolphin (Steno bredanensis), named Jiangjiang, was released back to sea earlier this week, two months after it beached itself and was rescued in Guangdong Province.


The 2.2-meter male dolphin was found stranded on the coast of Heisha Bay near the city of Jiangmen (200 km west of Hong Kong) on May 3. It was suffering breathing troubles, according to Yang Naicai, a vet who joined the rescue operation.


Rescuers checked the dolphin’s breathing, gave an injection of antibiotics, and provided food and medicine to help it regain its strength.

The animal was housed in a pool designated for dolphin rescue at the Pearl River Estuary Chinese White Dolphin National Nature Reserve.


“We maintained round the clock monitoring, hoping for a miracle,” said Chen Hailiang, from the reserve.

The dolphin, which weighs around 100 kg, was released back to the sea on Thursday as its physical condition had returned to normal.

Although the rough-toothed dolphin, a national second class protected species, can be found in deep tropical, subtropical and temperate waters around the world, it is a rare visitor to Chinese coastal waters.

In 2014, a rough-toothed dolphin stranded in Guangdong died despite rescue efforts.

Dead Chinese White Dolphin Found in Macau

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.

Pregnant Chinese White Dolphin Found Dead On Lamma Island Beach

On the morning of the 2nd July (2017), a man fishing at Kat Tsai Wan, off the west coast of Lamma Island, found a 2.5 meter long pink dolphin washed up on the beach. The man told Apple Daily that he could tell from his boat that the animal was dead.

The Ocean Park Conservation Foundation Hong Kong (OPCFHK) response team visited the site and conducted a necropsy on the beach. The dolphin was an adult female and was carrying an unborn calf at full term.


The male calf measured 1.02 m in length,  was also dead. The foundation said in a statement that no net entanglement or evidence of physical trauma was found on either carcasses, and both were severely decomposed.


The OPCFHK team said the mother dolphin’s organs and flesh indicated that she was very healthy prior to her death. The team has took organ, blubber, and tissue samples for further testing, inlcuding for microplastics.

Dead Huizhou Sperm Whale Was Pregnant Female

China Daily reported that an autopsy on the sperm whale that became stranded in Daya Bay, in South China’s Guangdong province, has revealed the whale was pregnant. A crane hoisted the dead sperm whale out of the Harbor last Wednesday. 
A developing 110 kg male fetus, about two meters in length, was recovered.

“It is the first time that an unborn baby has been found inside a stranded sperm whale in the world,” said Tong Shenhan, head of the land and marine life research institute of Xiamen city, who participated in the autopsy.

He believed that the finding would be of significance to the protection and rescue of sperm whale.

On Thursday, a group of about 20 experts from the School of Marine Sciences of Sun Yat-Sen University, Hong Kong Ocean Park and other institutes, conducted the autopsy in Huizhou Fishery Research and Extension Center, in Guangdong, taking samples of skin, fat, muscle and blood from the adult sperm whale.

They unexpectedly found milk in the whale’s breasts and then a placenta 2.6 meters in length.

The fetus will also undergo an autopsy, which is expected to take about one month due to its difficulty.

On Sunday morning, fishery authorities in Shenzhen city received a report of an adult whale trapped in fishing nets in waters off Daya Bay.

After the whale was freed from the nets, authorities and zoologists tried to guide it back into deep sea. However, it continued to swim in shallow waters off Shenzhen and Huizhou cities. It was confirmed to have been stranded near a wharf Tuesday afternoon and died Wednesday.

Tong said that the whale, estimated to be about 5 years old, was healthy and had no visible injuries.

He does not think it was tangled to death by fishing nets but the cause of death will be verified in at least a month.

The animal, weighing 14 tons and stretching 10 meters long, was lifted by a crane from the water in Huizhou port on Wednesday and was transported to Huizhou Fishery Research and Extension Center.

Huizhou has invited experts to conduct research on the whale examining its physiological structure, molecular biology, zoology and pathology, to provide more scientific data and theory for the protection of the endangered sperm whale.

The autopsy on the adult whale will continue over the next two days.

The city also plans to preserve four specimens of the animal’s skin, bone, viscera and placenta.

Sperm Whale Injured By Fishing Nets Trapped in Huizhou Harbor

A sperm whale (Physeter macrocephalus) received serious injuries to its tail while caught in a fishing net, which have left it only able to swim in circles, according to news portal chinanews.com (14/3/17).

The whale may have also damaged its sonar system, meaning it cannot find its way back to deeper waters.
The 12-meter-long mammal was found struggling in waters near Shenzhen on Sunday, suffering from several gashes with a tail fin that had been damaged by a fishing net.

Local divers and fishery officials worked together to release it from the net and guide it back to open waters.

However, the animal was too tired to make it away from the shore, and ended up in Huizhou Port on Monday, mere meters from the land. Huizhou is about 50 kilometers away from Shenzhen.

Local officials and 30 experts from the Hong Kong Ocean Park and the Institute of Deep-Sea Science and Engineering under the Chinese Academy of Sciences are monitoring the animal. 

One expert suggested luring or driving the whale back to the sea by using whale sounds or those of predators.

However, the expert warned that the whale may have to be poisoned or blown up if rescue efforts fail.

Wu Gang, deputy director of the Huizhou Marine and Fisheries Bureau, said they will first try to treat the whale’s injuries and that euthanasia will only be considered as a last resort.

Chinese White Dolphin Stuck in Pearl River Tributary

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)

Fourth Dead Cetacean Found in 1 Week

A dead finless porpoise (Neophocaena phocaenoides) was found in Discovery Bay on Sunday afternoon, the fourth dead marine mammal discovered in four days after the bodies of three dolphins were discovered on Thursday.
It was found in the water and handed over to the Ocean Park Conservation Foundation for an autopsy. The OPCFHK said that the porpoise was a 1.55 metre long female and the body had reached the fourth stage of decomposition. Its cause of death has yet to be determined.

On Thursday, the bodies of three Chinese white dolphins (Sousa chinensis) were found – one entangled in fishing wire near Lido Beach in Sham Tseng, one in waters near Lamma Island and another in Fan Kwai Tong off Lantau Island.

The Hong Kong Dolphin Conservation Society (HKDCS) estimate that there has been a decline since 2014, when 61 dolphins were estimated to be in Hong Kong waters.