This video clip shows a close encounter with a large and beautiful basking shark off the County Antrim coast near Portrush in Northern Ireland.
The clip, taken earlier this month, was filmed from a small boat - but the shark thankfully isn't a danger to humans.
The harmless, plankton-eating creature, which has no teeth, is the world's second largest living fish after the whale shark and can grow up to 33ft long.
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