CHATHAM — The scientists and fishermen on board the Ocearch, a repurposed crabbing vessel, received word that their scouting boat had hooked a great white shark, sparking a flurry of activity.
They were about to get up close and personal with the animal, more than 2,000 pounds and nearly 15 feet long.
“I’m nervous,” said state shark expert Greg Skomal, who has tagged great whites, but never like this, never this close.
The Ocearch crew tags great white sharks in an unorthodox way. Unlike Skomal’s team, which has tagged a dozen great whites off the Massachusetts coast with harpoons, Chris Fischer’s Ocearch crew baits the fish and leads them onto a large platform that lifts them out of the water for tagging and collecting blood, tissue and semen samples.
Ocearch, a nonprofit research organization named for a combination of “ocean” and “research,” is crewed mainly by sport fishermen. It is funded by sponsors and donors, and a South Africa expedition was the subject of History channel’s “Shark Wranglers.”
Now, Ocearch has come to Cape Cod for a few weeks, minus the reality show and plus local scientists, to help shed light on the sharks’ migration patterns, protect breeding and birthing sites, improve public safety and raise awareness about the threatened species that is a rising presence in the area.
“We have massive knowledge gaps about how to protect their future,” said Fischer, Ocearch’s expedition leader.
Ocearch’s real-time satellite tags last five years. Each time sharks’ dorsal fins break the surface, the tags ping a satellite and mark an online map, accessible to researchers and the public.
The work is dangerous for both man and fish. One shark died on the lift in South Africa. The crew tries to return sharks to the water within 15 minutes.
“I used to be nervous of what they’d do to me,” co-captain Jody Whitworth said. “Now I worry that we’ll hurt them.”