Warmer waters in South-West attract cuttlefish, red jellyfish and Spanish octopuses 

Rising sea temperatures responsible for attracting species usually found much further south, expert says

An octopus at Dingle Oceanworld. They are now here in numbers and are killing lobster. Picture: Domnick Walsh 

Cuttlefish eggs are turning up in lobster pots in West Cork, a species of red jellyfish rarely found outside the Mediterranean has arrived in numbers in Ventry in the past week, and large Spanish octopuses have been eating the lobsters in Schull.

The developments are being viewed with concern by marine experts, who say there is a change under way in the sea environment in the South-West due to rising temperatures.