Mary Doherty, who came across the sunfish with her friend Adele, pictured alongside the rare fish.

A RARE OCEAN sunfish has been found washed up off the coast of West Donegal.

The huge fish was discovered by friends out walking yesterday morning at the Back Strand in Falcarragh.

The fish, which has a disc shape, was dead.

It was found by friends Mary Doherty and Adele Paton.

Ocean sunfish, which can weigh between 247 and 1,000 kg when fully grown, are native to tropical and temperate waters around the world.

However, because of an increase in ocean temperatures, they are now found occasionally in Irish waters.

They survive mostly by eating jellyfish, squid and other small fish.

It is not known how this particular sunfish died although they often become caught up in gillnets.

It is one of the largest boniest fish in the sea and gets its name as it sunbathes on the surface of the sea.