▶ Watch Video: Shark devours a seal, researchers show how sharks are tagged in 60 Minutes report

Shark tagging isn’t a new venture for Sea Ventures Charters in Maine. But last month, those on board the company’s fishing boat had a “once-in-a-lifetime experience” – when a large mako shark jumped out of the water and plopped right on the deck. 

A now-viral video shows the moment it happened on August 27 and sent those on board the 38-foot “Lady Anne” scrambling. 

Sea Ventures Charters posted about the experience on Facebook, saying it had been a “lovely day” tagging and releasing sharks. That’s when “a big mako took the bait,” the company said. 

At first, those on board were just watching the shark jump in and out of the water as it was being reeled in, but on its last jump, it spiraled and thrashed its way on board, knocking over one person and sending the other scrambling up the steps to the upper deck. 

Warning: the following video contains explicit language.

Despite the chaos, Sea Ventures Charters said it was “a once-in-a-lifetime experience” and that nobody was injured. Eventually, they were able to measure, tag and release the “astonishing” shark, which the group later commented was a “handsome male.” 

The company, which specializes in sport fishing trips, says on its website that its shark fishing trips involve measuring, photographing, tagging and releasing sharks as part of the National Marine Fisheries Apex Predator Tagging Program. The group said it has tagged hundreds of sharks since 1984, most of which are blue sharks that get up to 12 feet and 400 pounds and makos between 200 and 800 pounds.

According to NOAA, makos can get up to 13 feet and have “below target” population levels due to overfishing. Fishermen are not allowed to keep them if caught.