I loved this documentary. Watched it with my daughter who is an 8-yo wannabe a marine biologist someday. What always troubles me is that in the end, the film maker just lets the octopus died. I wonder what stops him from providing a sanctuary for it. Another moment in this I found strange is how he didn't want to intervene when the shark came after and ate the octopus arm. Maybe his thought is more about survival of the fittest and didn't want to be the decision maker in the natural food chain.