Fishermen have reporting sightings of one of the world's most aggressive sharks off the Cornish coast.

Three witnesses said they saw an oceanic whitetip in St Ives Bay.

The species is responsible for more human deaths than all other shark species combined.

The sightings were reported to the harbourmaster at St Ives.

The whitetip normally lives in warmer waters, but rising temperatures have seen several new species found in Cornish waters.