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Anthony Wong Chau-Sang as Alan Tam |
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Dolphin Chan Hoi-Hang as Dolphin / Shark |
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Parkman Wong as Officer Lee Sau |
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吳啟華 as Wong Yu Yan, Anthropologist |
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Wing-Cho Yip as Dolphin's Dad |
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Dayo Wong as Dr. Wong |
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黎海珊 as Whale |
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Lee Chung-Wai as |
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Sean Lau as Joe [cameo] |
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Kan-Wing Tsang as Library Cleaner [cameo] |
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Herman Yau as |
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八兩金 as |
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Wong Lap-Wai as |
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李文標 as |
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黃老邪 as |
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林道權 as |
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侯煥玲 as |
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梁鴻華 as |
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余慕蓮 as |
| Production | 梁小熊 | Producer |
| Writing | 劉永健 | Writer |
| Writing | 梁小熊 | Writer |
| Directing | Anthony Wong Chau-Sang | Director |
| Writing | Anthony Wong Chau-Sang | Writer |
| Camera | Rocky Tsang Chun-Chung | Director of Photography |
| Sound | 黃英華 | Original Music Composer |
