This Saturday, BBC America will present the latest of its peerless nature documentary miniseries: Blue Planet II, a more than worthy sequel to its 2002 masterpiece of filmmaking about our oceans and other waters, 2002’s Blue Planet. This week, as a buildup to that new entry, BBC America offers daily mini-marathons of other of its nature documentary miniseries – starting with Blue Planet itself. The episodes will be run, in order, beginning at 9 a.m. ET, and again at 5 p.m. ET. Any of these hours – and all of them – come highly recommended, by me. I love these documentaries, and the contributions of narrator David Attenborough in particular.