In Tahiti, it is called Rogo-tumu, a tentacled sea demon who drags unsuspecting seafarers ... But all are based on a remarkable real animal: the octopus. NATURE’s The Octopus Show helps viewers ...

Their soft, squishy bodies, lurking in the oceans’ dark reaches, have inspired monsters from the sailor-eating Kraken of Nordic legend to the Caribbean sea demon Lusca. The creatures ...