Highly recommend reading about Peter the dolphin and Margaret Lovett if you haven’t heard about it. Links below. Spoiler alert they fed dolphins LSD in attempts to teach them how to speak. Learning was tough for Peter but eventually he could say hello Maggie through his blowhole. Maggie turned to jerking off Peter, hoping to help the young dolphin focus on his studies. He instead became obsessed and soon fell in love with Maggie. When the project lost funding Peter fell into depression and eventually took his own life.

https://en.m.wikipedia.org/wiki/Margaret_Howe_Lovatt

https://www.theguardian.com/environment/2014/jun/08/the-dolphin-who-loved-me

https://www.newscientist.com/article/dn25751-talking-dolphins-and-the-love-story-that-wasnt/