The heaviest boned fish in the world - normally seen sunbathing in the tropics - has found its way to an historic Oxford market.

The flat, oval Oceanic Sunfish, or Mola Mola, was netted by fishermen off the Faroe Islands between Scotland and Iceland before being sent south.

Normally the species, boasting two huge triangular fins and a beak-like mouth, plies waters around the southern Atlantic and south west Pacific, often lying flat on the water.

But according to Geraint Jones, manager of Hayman's Fisheries in Oxford's Covered Market, its appearance is a sign of global warming as it travels further after jellyfish and molluscs.

He said: "You do see them off the southern coastline - they had a big shoal off the southwestern tip of Cornwall a few weeks back."