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Shark gathering puzzles scientists

By Aspen Pflughoeft, The Charlotte Observer
Published: March 26, 2024, 6:00am

Deep underwater, a group of elusive predators gathered off the coast of Panama. The gathering was “atypical” and a first of its kind for the area.

It didn’t go unnoticed.

Scientists in a submarine spotted the “rare” sea creatures and identified them as prickly sharks, according to a study published March 8 in the peer-reviewed Journal of Fish Biology.

Prickly sharks, scientifically known as Echinorhinus cookei, are an elusive and “solitary” deep-sea species named for the “small” thorny projections that cover their bodies, researchers said. These sharks are found throughout the Pacific Ocean. A photo shows the pale gray-brown shark.

Researchers spotted 12 prickly sharks in May 2022 during a series of submarine dives to explore the Cordillera de Coiba seamounts, a protected marine area off the western coast of Panama, the study said.

Two prickly sharks were seen on their own, and 10 were seen in an “atypical” gathering, researchers said. The sharks seemed to have “gathered deliberately rather than coincidentally,” but researchers did not know why.

The deep-sea predators “were mainly observed swimming over rocky habitats” about 1,000 feet underwater, the study said.

The sighting was the “first documented record of live specimens of Echinorhinus cookei in Panama,” researchers said.

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