Anthony Wong Chau-Sang

Alan Tam

Dolphin Chan Hoi-Hang

Dolphin / Shark

Parkman Wong

Officer Lee Sau

吳啟華

Wong Yu Yan, Anthropologist

Wing-Cho Yip

Dolphin's Dad

Dayo Wong

Dr. Wong

黎海珊

Whale

Lee Chung-Wai

Sean Lau

Joe [cameo]

Kan-Wing Tsang

Library Cleaner [cameo]

Herman Yau

八兩金

Wong Lap-Wai

Lee Man-Piu

Quinton Wong Liu-Che

林道權

侯煥玲

梁鴻華

余慕蓮