dolphins help fishermen catch fish
https://www.youtube.com/watch?v=42MpfPqWkhk
dolphin asks scuba diver for help
https://www.youtube.com/watch?v=6t7N6XLnhno
cetacean (whales, porpoises and dolphins) intelligence
https://en.wikipedia.org/wiki/Cetacean_intelligence#Use_of_tools
People are complicated.
