Shark ascending

The first barracuda to be caught in British waters was landed at Newlyn, Cornwall four years ago. This summer giant fin whales have been spotted off the Pembrokeshire coast. The evidence of these alien visitors may be attributable to global warming, or to changes in the flow of ocean currents, but it makes one wonder if it may be only a matter of time before a fearsome great white shark moves up the Atlantic from its present killing grounds on the South African coast to the bathing beaches of north Cornwall (from where, watching a school of porpoises not being...