Blue Planet II
BBC1, Sunday 19 November, 8pm
Time to plunge back into the alien depths of the “marine desert”. We’ll see sperm whales hunting for squid 1km below the surface of the ocean, and discover how baby turtles survive miles from shore by using floating debris as life rafts. While this last phenomenon might suggest that dumped plastic has its uses, BP2 also shows how it can have tragic consequences. Jason Arnopp