The population of Indo-Pacific humpback dolphins (Sousa chinensis) living along Taiwan's west coast has dropped below 100 due to over-development along the coast that has diminished their habitat and food sources, and the International Union for Conservation of Nature (IUCN) has classified these dolphins as critically endangered (CR), one step away from extinction in the IUCN classification scheme.
近年，一群生活在西海岸的「中華白海豚」由於沿岸過度開發以致棲地日益縮小、食物不足，族群減少到 100 隻以下，2008 年被國際自然保育聯盟列為僅次於滅絕的「嚴重瀕危」等級。