To get to their feeding ground these crabs must cross treacherous waters where a hungry Moray Eel and Octopus are on the hunt – lurking just below the surface. In this clip its crab vs eel and crab vs octopus – watch to find out if the crabs make it to their feeding grounds in one piece or if the eel and octopus nab themselves a tasty meal.

This clip is taken from the 6th episode of Blue Planet II, narrated by Sir David Attenborough.