Scientists Track Young Sharks in Great White Nursery off New York
Scientists are catching, tagging and releasing sharks off New York’s famous Hamptons as they work to better understand one of the world’s few confirmed great white nursery areas.
The waters of the New York Bight, stretching from Montauk on Long Island to Cape May in New Jersey, provide an important summer habitat for young white sharks, offering relatively shallow coastal waters where they can feed and grow during the vulnerable early stages of their lives.
Researchers working off Long Island are now tagging a variety of shark species to learn more about their movements and how they use the region.
Different tracking devices are being deployed, including acoustic tags that can be detected by receivers along the coast and tags that record depth and water temperature before eventually detaching from the shark.
Previous research has shown that young white sharks remain around Long Island throughout the summer and into autumn, with some later travelling south to waters off North and South Carolina before returning north the following year.
Scientists are also seeing a changing mix of shark species in the region. Spinner, blacktip and bull sharks are among those being recorded farther north as ocean temperatures rise.
Researchers stress that the apparent increase in shark sightings around Long Island does not necessarily mean there has been a sudden surge in shark numbers. Improved technology, including drones and smartphones, has simply made sharks much easier to spot than in the past.
Understanding how these young sharks use their nursery habitat is particularly important for conservation. Great whites mature slowly, making the survival of juveniles critical to the long-term health of the population.
By tracking their movements and learning more about the habitats they depend upon, scientists hope to build a clearer picture of life during one of the least understood stages in the life of one of the ocean’s most iconic predators.
