According to the World Wildlife Fund (WWF), Hong Kong's dolphins have lost nearly 5,000 acres of habitat over the past 20 years. The organization says construction of the new runway would heavily impact another 4,000 acres.
"We have been following some of them for nearly 20 years so those are our old friends," said Hung. "They don't realise that there is more disaster waiting for them."
To learn how you can do to help the WWF protect the Chinese white dolphin, click here.