Chinese White Dolphin
   FAST FACT
Scientific Name:
Sousa chinensis
IUCN Conservation Status
(Year Published):

Eastern Taiwan Strait (ETS) subpopulation: 
Critically Endangered (2008)

Other subpopulations:
Near Threatened (2008)
Estimated Wild Population:
Fewer than 100 for ETS subpopulation.

Around 2,500 individuals in the Pearl River Estuary, including Hong Kong
Life Span:
40 years old at maximum
Distribution:
Shallow and coastal waters in the Indo-Pacific region

The Chinese white dolphin, also known as the Indo Pacific Humpback Dolphin, has a distinct, long, thin beak. The dolphin has an enlarged dorsal hump at mid-back on which a small, falcate dorsal fin sits hence the common name. The colour of Chinese white dolphin has great variations depending on their geographical location. In Chinese waters, their colour changes with age: newborns are dark grey, and their color changes to white or pink as they grow up. Some adults may retain grey spots.

Chinese white dolphins can be found in western water of Hong Kong and the adjacent Pearl River Estuary. The Chinese white dolphin's diet consists of small fish. Sometimes, we can see them feed behind fishing boats. Many types of surface activities have been observed, including leaping and spy-hoping. Their dive durations are short and do not last more than 4 to 5 minutes in general.





 

 
  WHY ARE THEY IMPORTANT?
Top Predators in the Food Chain

Like other dolphins, Chinese white dolphins are the top predators in the food chain. They play a critical role in maintaining the balance of marine ecology by controlling the number of other marine lives such as fish and squids. The conservation status of Chinese white dolphins and finless porpoises is a great indicator to assess the general health of Hong Kong's marine ecology, as both species reside in Hong Kong waters, in the heart of Hong Kong's intensive urban development. Their population, distributions, behaviours and survivorship provide valuable insights into the impacts of human activities on marine life, and the threats brought about by marine pollution and fishery equipment.

  THREATS
Estimated Wild Population:
Fewer than 100 for ETS subpopulation.

Around 2,500 individuals in the Pearl River Estuary, including Hong Kong.

IUCN Conservation Status:

Vulnerable
EX
EW
CR
EN
VU
NT
LC
DD
 

Eastern Taiwan Strait subpopulation
Critically Endangered

CITES: Appendix I
Fishing net entanglement

Chinese white dolphins can be entangled and killed by fishing nets or gears abandoned in the sea. We also found fishing hooks in their stomach, which demonstrated the adverse impacts of abandoning fishing gears in the sea on dolphins' well-being.

Habitat loss and disturbance

The habitats of Chinese white dolphin is diminishing due to human activities and coastal development.

Marine traffic and pollution

Heavy marine traffic would affect the well-being of Chinese white dolphins. We have found traumatized dolphins suspected to be injured by propellers. Marine pollution is also harmful to them.

  WHAT OPCFHK IS DOING
Funding Chinese White Dolphin Conservation Projects

In 1995, Ocean Park Conservation Foundation was registered as an independent charitable trust and commenced research on long-term conservation of Chinese white dolphins. In 2005, OPCF merged with Hong Kong Society of Panda Conservation to form today's Ocean Park Conservation Foundation, Hong Kong. The Chinese white dolphin has been our focal species for all these years. We have funded dozens of Chinese white dolphin conservation projects over the years.

Cetacean Stranding Response Team

About
Since 2006, Ocean Park Conservation Foundation, Hong Kong (OPCFHK) has been collaborating with Agriculture, Fisheries and Conservation Department (AFCD) to investigate cetacean stranding cases in Hong Kong, while most cases involve finless porpoises and Chinese white dolphins.

Objectives
Samples collected from the stranded cetaceans provide us with important information about local cetacean, including age, sex, causes of death and accumulated organic pollutants, which enabled conservationists to better conserve the animals and their habitats.

 
  GET INVOVLED

 

Report stranding cases
If you encounter a stranding cetacean, regardless of whether the animal is dead or alive, please call 1823 to inform AFCD and provide your name, contact number and the following information:

  1. Date and time of discovery and the location
  2. Status of the stranded cetacean (alive, slightly or badly decomposed, etc.)
  3. Length of stranded cetacean and characteristics (e.g. any dorsal fins/ obvious rostrum, etc.)

 

Join Friends of the Foundation
Other than establishing the Cetacean Stranding Response Team, we strive to promote Asian cetacean conservation through scientific research, community education, as well as symposium and workshops. As a charitable trust, the Foundation needs your support. Ekin Cheng has joined the Friends of the Foundation, and so can you! Please support our conservation work by making a monthly or one-off donation. Join now!

Be a responsible dolphin watcher
Irresponsible or unregulated dolphin watching activities may cause disturbances and harassment to the animals in the wild. For example, some vessels would chase dolphins with high speed or intercept the course of dolphins, which increases the chance of collision or separating groups or mother and child. Please choose responsible and experienced dolphin-watching agencies and read and follow the code of conduct for dolphin watching before the tours.

Cherish our ocean
To protect cetaceans, we must protect their habitat as well so that they can live in a safe and healthy environment. When you engage in coastal or water sports and activities, like boat trips, sunbathing and scuba diving, please avoid using shampoo and shower gels on the boat, to avoid untreated chemicals entering the sea and polluting the marine environment. More importantly, please do not litter on the beach and in the sea. As for fishermen and fishing enthusiasts, please dispose used fishnets and other fishery gears properly and do not abandon them in the sea.