An Earth Journal article entitled "Smarts: Notes on Dolphin Brain Power, Communication Skills, and Social Style," states that, "In coastal Brazil, a group of female bottlenose dolphins and offspring has participated in cooperative hunting with fishermen for nearly 150 years.
在一篇＜高智慧動物﹘﹘海豚智力、溝通技巧與社會型態之筆記〉中提到，「在巴西海岸，就有一群雌性瓶鼻海豚帶著小海豚跟漁人合作共同捕魚，這種漁人與海豚的合作關係歷時已有將近一百五十年之久！」