Fifty years ago Gannets in twos and threes were not infrequently seen on Breydon, whither they went and fished for yawlers (half-grown herrings), that were plentiful there in those deep-water days.

There was no wiggle room here, no leeway, no margin for error.

Porcellanids are, after brachyuran crabs, the most successful decapod group to achieve a crab-like body form through carcinisation. Unlike brachyurans, porcellanids retained the ability to swim by flapping their abdomen, armed with a well developed tail fan. Here, we present an exceptional case of carcinisation, with the South-American porcellanid, Allopetrolisthes spinifrons, an obligatory commensal of the sea-anemone species Phymactis papillosa and Phymanthea pluvia.

And ever as any black cockade may emerge, rises the many-voiced growl and bark: À bas, Down!