Over the last few years huge shoals of sardines have shown up off the coast of the Philippines and have been captured on film by underwater photographer Dr Alexey Stoyda who travelled there especially to capture the images. Maybe the same dramatic scenes exist in the waters of Mount's Bay and the huge shoals of Cornish Sardines could be captured by an intrepid underwater photographer or diver - who knows?
Any of the local sardine skippers will happily point you in the right direction.