Not exactly light Friday night fare. There is a lot of graphic footage of human-on-whale violence (capturing young orcas), whale-on-whale violence (group hierarchy, etc.), and whale-on-human violence (attacks on humans made by captive orcas). There were a few points at which I had to look away from the TV and just listen.
Worth watching, but know your limitations, and I will continue to do some research of my own in order to determine how I feel about it.