Pink DolphinsPink Dolphins

Sharmaine Kwanhttp://en.wikipedia.org/wiki/Pink_dolphins

The pink dolphins (Sousa chinensis) can The pink dolphins (Sousa chinensis) can

be found throughout Southeast Asia, be found throughout Southeast Asia, South Africa and Australia. South Africa and Australia.

They are mammals and can be They are mammals and can be found in the shallow waters found in the shallow waters near the northern parts of Lantau near the northern parts of Lantau Island in Hong Kong. Island in Hong Kong.

Blue – Where they habitathttp://en.wikipedia.org/wiki/Pink_dolphins

During a pink dolphin’s lifetime, their skin colour changes.

StagesStages ColourColour

BirthBirth BlackBlack

ChildhoodChildhood GreyGrey

Youth ageYouth age PinkishPinkish GreyGrey with spotswith spots

AdultAdult PinkishPinkish whitewhite with the spots with the spots fading outfading out

Why are they called pink dolphins?

They are called pink dolphins because of their pink skin. This is because they can expand their blood vessels to release body heat which makes you see pink skin.

Facts:

•Pink dolphins can live up to 40 years old

• The oldest pink dolphin in Hong Kong is 33 years old

•You can know the age of a dolphin by observing the cross section of its teeth

Pink dolphins uses echolocation to find Pink dolphins uses echolocation to find food and to avoid danger. Noises from the food and to avoid danger. Noises from the boat engine can interfere with the boat engine can interfere with the echolocation and the communication echolocation and the communication between dolphins.between dolphins.

A pink dolphin’s meal includes small river fish, crabs, small turtles and catfish.

http://en.wikipedia.org/wiki/Crabs

http://en.wikipedia.org/wiki/Catfish

Dangerous factsDangerous facts

•Many pink dolphins live in the Pearl River which is polluted

•Reclamation leads to the habitat loss of pink dolphins.

•They are hunted

•22500 tonnes of liquid waste is dumped into rivers

•450000 cubic metres of sewage is dumped into the harbour

•Over fishing will reduce the amount of food for them

http://www.hkdolphinwatch.com/

How can we protect pink dolphins?

1.Don’t pollute water

2.Stop reclamation to avoid habitat loss

3. Don’t hunt them

4. Join a beach clean-up

5. Avoid toxic products