Captive wildlife footage in Blue Planet 2 'totally true to nature', say producers

Most filming was done in the wild - including armoured octopuses and hypnotic cuttlefish - but some crucial behaviour had to be captured in lab conditionsFootage of captive wildlife inserted into the BBC's Blue Planet 2 series remains "totally true to nature", according to the makers of the flagship show that reveals new insights into life in the oceans.An octopus that armours itself with shells and rocks, fish that use sign language and tools and dazzling cuttlefish that appear to hypnotise their prey are among the new spectacles uncovered by the series, which starts later this week. Continue reading...