This incredible underwater footage shows what basking sharks really look like beneath the surface as the island enjoys a bumper season for the world’s second-largest fish.

Staff at Casey J Fishing Tours have captured remarkable videos of the summer visitors to Manx waters, where they feed on plankton.

The particularly warm weather may have helped bring more basking sharks to the island’s coastline this year.

While the island has long been considered a hotspot, the graceful creatures have been seen more frequently off the west coast of Ireland in recent years.

A spokesperson for Casey J Fishing Tours, which operates from Peel, said: ‘We’ve seen about 30-plus basking sharks and they are on their way back south now. We have seen many juveniles too, which is good.

‘In the last 10 years, we’ve only seen a few due to north and easterly winds in April/May time, with most passing along Ireland’s west coast instead.

‘I think this year’s warmer south winds have brought them up this way, the same as jellyfish. It has been like it was 30 years ago.’