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 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.
A 60cm-long Pacific Spadenose shark (Scoliodon macrorhynchos) washed ashore at Butterfly Beach in Tuen Mun at about 11.30am this morning. As always when a shark or suspected shark is spotted at beach in Hong Kong,
the warning flag was hoisted and beach-goers are told not to swim there, while marine police and the government flying service scour the area for sharks. No more Sharks were found. The shark may have been still alive when it washed ashore, but is now being autopsied by Ocean Park Conservation Fund.
All of Hong Kongs gazetted beaches are enclosed with shark-prevention barriers of steel wire mesh. The shark nets for the beach were inspected but no damage was detected. It is possible that the shark came ashore during high tide – or it was simply small enough to slip through the mesh.
A similar or possibly the same species was found at a beach on Lamma in August 2014.
Also on Thursday, the carcass of a male Chinese white dolphin (Sousa chinensis) was found on a beach in Sham Tsang in Tsuen Wan district. An AFCD spokeswoman said the department was alerted to the discovery at 11am. The dolphin measured 2.1 metres long and was also sent to Ocean Park for an autopsy.
According to a Marine Department notice, acoustic monitoring stations will be temporarily established on the seabed at Lung Kwu Tan (NW New Territories near Tuen Mun) and Siu Ho Wan (N. Lantau) for the next 9 months.
The acoustic monitoring stations will collect data on dolphin vocalisations in the area. They are structures of pyramid shape with a height of about 0.8 m and a square base of 1 x 1 m. Its bottom will be embedded in the seabed.
Regular diving operations for inspecting and retrieving data from the acoustic monitors will be carried out by a work boat in the above locations every month.
Source: Government of Hong Kong SAR Marine Department Notice No.12 of 2016 dated 22 January 2016
As reported by several news outlets this week, a Chinese White Dolphin (Sousa chinensis) – aluas Indopacific Humpback Dolphin or ‘pink dolphin’ – was spotted near Guangzhou in the Pearl River on Wednesday the 21st of October. This drew some crowds as the dolphin stayed for about an hour. Conservation staff later used sonar equipment to try to herd it back out towards the sea -apparently with some success.
This story is however quite hyped-up, because these dolphins live near estuaries and previous studies have shown they move further into the estuary in the dry winter months when less freshwater is flushed into the sea by the Pearl River. In summer when the heavy rains come and the river swells the dolphins range extends further out. This is likely because they are following fish stocks that themselves track a line of salinity which mobmves in and out of the estuary with the seasons. Some fish like the flathead mullet (Mugil cephalus) commonly sold in fish markets also move in and out of fresh and seawater depending on their stage in life.
Speaking of which, I saw another prize catch of a mullet on the central waterfront yesterday. It’s a bigger fish than I have seen in any market at about 40 cm and probably 2+ kg – it drew a small crowd and plenty of mobile phone cameras. congratulations to the lucky angler!
‘Hope’, the Chinese White Dolphin injured by a boat propeller in January, was euthanised on February 10th after its bodily functions started to shut down overnight. Hope was first sighted by university students on January 16 with large wounds on its back that were so deep they exposed the marine mammal’s vertebrae. The spines above its fluke was completely severed.
Bowing to intense public pressure and activist lobbying, ‘rescuers’ located and caught it 18 days later at Lantau’s Shek Pik area. He was then handed over by the Agriculture, Fisheries and Conservation Department to Ocean Park’s rehabilitation facilities, where he was given fish, tubing fluids and antibiotics and where a vet cleaned the wounds.
Initially there were some signs of slight recovery as carers attempted to help him regain the loss of more than 20 percent of his body weight (up to 50 kg), after at least three weeks of limited feeding, by hand feeding him fish .
But his condition only deteriorated overnight (10-11th of February) and it failed to respond to treatment. He began regurgitating his food and his breathing became weak. His body temperature started to drop and he lost buoyancy.
A necropsy and a virtopsy will be performed to investigate the extent of Hope’s wounds, internal organ damage and infection to allow park staff to as much as possible for the care of any future injured dolphins.
As mentioned in my previous post on Hope’s capture, Ocean Park and almost every other captive dolphin facility have a pretty poor record at keeping even healthy dolphins alive, let alone rehabilitating them (successes are the exception that prove the rule).
But activists and the general public were not satisfied with this or the prospect of the dolphin simply dying in the sea, so the animal was ‘rescued’ and transferred to a sterile, featureless and alien environment (tank) in a operation that would have increased stress levels, where it was then completely alone without even the possibility of acoustic contact with other members of its own species. The chances, as Ocean Park’s vet in charge even said, were always slim for such severe injuries. So faced with the highly likely death of the dolphin – it was decided it should die all alone – scared and stressed – in addition to its painful and fatal injuries.
Many people harbor feelings of passive misanthropy – a latent hatred of humanity, because we all know humans are screwing up the environment. The result is a desperate need to ‘fix’ the situation. Consequently, scientific opinion is frequently dismissed and even attacked, if it advises the public to not act. In the case of Hope the dolphin, HK’s leading expert on local dolphins Dr Samuel Hung was publicly criticised and his reputation damaged because he advised leaving the dolphin alone. Scientifically that was the right call. But most people did not want to hear that. People like to humanize dolphins and that is good in some ways, in fact it helps their conservation to some extent. But the humanising of animals serves primarily human emotional needs to love and care for another living being. The side effects can be both positive and negative.
The ‘rescue’ of Hope was dubbed a ‘humane act’, but if you think it through the vast majority of humans, if we could chose the setting of our own death, would want to die in familiar surroundings with family and friends present. The prospect of our final moments being born out in a clinical, chlorinated prison cell completely alone except for the watchful eyes of the group of aliens who removed us from our homes and put us in the cell. This sadly is how Hope met his end.
What is interesting, too, is that the same activists who insisted on putting this dolphin in a marine-themed amusement park facility, also adamantly campaign against this dolpinarium facilities at the same time. This indicates to me that there is not a rational reason behind the rescue, but more of an emotional one.
So there we have the even sadder end of an already sad tale. Sometimes ‘rescuing animals’ can be the worst thing to do.