The Kraken. The legendary sea creature of Greek mythology - immortalised by Harryhausen in stop-motion in the 1980s. It is also the name given to the Giant Squid, the most elusive of all ocean species. Believed to grow up 60 feet in length, it has been the subject of many tales of misadventure on the high seas. Never has one been captured alive or even captured alive on film. Jacques Cousteau claimed to have seen one, but he was probably full of shit.