The Big Blob
'We were hauling up from 800 fathoms when we saw on the sonar something very large enveloping the crab-trap. There was a series of hard jerks, the line broke and the trap was lost.' What was the giant creature locked in a tug-of-war with a Bermudian fisherman? Could it have been a giant octopus, 150 feet across from arm tip to arm tip the largest invertebrate on earth? Peter France investigates a mystery from the deep. Producer MICHAEL BRIGHT BBCBristol