Gray reef sharks, the subject of a study on social behavior among sharks, are seen in the Pacific Ocean around the Palmyra Atoll, about 1,000 miles (1,600 km) southwest of Hawaii in this undated photo released on August 12, 2020. Yannis Papastamatiou/Handout via REUTERS.
WASHINGTON (Reuters) - Sharks have more complex social lives than previously known, as shown by a study finding that gray reef sharks in the Pacific Ocean cultivate surprising social networks with one another and develop bonds that can endure for years.
The research focused on the social behavior of 41 reef sharks around the Palmyra Atoll, about 1,000 miles (1,600 km) southwest of Hawaii, using acoustic transmitters to track them and camera tags to gain greater clarity into their interactions.
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