But when Gareth and Charlie finish off their Tanqueray Martinis-Oh with a little Guinness chaser and lurch topside for to clear their heads in the salt-sea air, it's then that peerin' a bit squiddy-eyed off to starboard, the both of 'em swears they spy a great grey Seal a-swimmin' alongside, lookin' longingly up at the frolicking crew with her mournful, soulful, somehow-human-seeming eyes....