The fishing industry has an adverse impact on Taiwan's humpback dolphins, fully one-third of which bear injuries indicative of past entanglements in nets or collisions with ship propellers. Research from Hong Kong indicates that 8.9 % of the humpback dolphins at the mouth of the Pearl River bear obvious scars. In the meantime, overfishing deprives the humpback dolphins of their favorite foods.
以「漁業」對台灣白海豚的影響來說，族群中有高達 1/3 的個體身上有傷痕，顯示海豚遭魚網纏勒或船隻螺旋槳打傷的情況相當嚴重；香港的研究也顯示，珠江口 8.9 % 的白海豚身上有明顯疤痕。