My Octopus Teacher

In 2018, Craig Foster began free-diving in a cold underwater kelp forest at a remote location in False Bay, near Cape Town, South Africa. The location was near Simon's Town on the Cape Peninsula, which is exposed to the cold Benguela current of the Atlantic Ocean.
Foster started to document his experiences, and, in time, met a curious young octopus that captured his attention. The film shows Foster's growing intimate relationship with the octopus as he follows her around for nearly a year. They form an individual bond, and she plays with Foster and allows him into her world to see how she sleeps, lives, and eats. She frequently has to defend herself against pyjama sharks. In one attack, the octopus loses an arm, and she then retreats to her den to recover, slowly regenerating the arm over three months. In a later shark attack, she shows an incredibly improved creativity to survive, including sticking on the shark's back. After mating with a male octopus and producing numerous eggs, she dies naturally while tending to her eggs. Later, a shark scavenges her dead body and carries it off.
Foster describes the effect of this mentorship-like relationship the octopus provided him, teaching him a lesson on the fragility of life and humanity's connection with nature. This transfers to Foster creating a deeper bond with his son, Tom, as the boy develops as a diver and marine biology student.