Two friends had some unwelcome company while kayaking off Florida - a hammerhead shark.
Mark Naumovitz and Brian Nelli were off the coast of Palm Beach last week when the began circling them for about two miles.
Although their frequent ocean adventures bring them in contact with sharks often, they've never seen one stalk them for so long.
They caught the latest encounter on video.
Mr Naumovitz, of Port St Lucie, said the shark swam under and bumped into their boats and was "following us like Jaws".
Mr Nelli said he was a little alarmed by the shark but his first instinct was to get his camera out. The shark eventually disappeared about a mile from shore.
He added: "We got bored of him before he got bored of us."