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Fish, crabs and shrimp shelter in New York bay's new artificial reefs

By · Via Times of India · Published by Everything Blog

In short

City Island Oyster Reef volunteers deployed six concrete reef balls, each weighing roughly 175 pounds, to establish a lasting aquatic foundation. Prior to placement, the units were seeded twice with oyster larvae at the Cornell Cooperative Extension's marine hatchery to stimulate wild colony growth. While these filter-feeding bivalves cannot fully eliminate sewage, they remove algae and organic particles to boost local water clarity. Researchers and volunteer divers are actively tracking the site's biological progress through structural comparisons and photogrammetry.

Key points

  • The artificial reef initiative aims to naturally restore native oyster populations after…: The artificial reef initiative aims to naturally restore native oyster populations after seven years of dedicated research and planning.
  • Restoring filter-feeding oysters enhances bay water clarity, although the shellfish canno…: Restoring filter-feeding oysters enhances bay water clarity, although the shellfish cannot completely resolve local sewage contamination issues.
  • Divers and scientists are using photogrammetry and regular underwater surveys to evaluate…: Divers and scientists are using photogrammetry and regular underwater surveys to evaluate oyster growth and marine biodiversity on the structures.

Sources checked by our analysis pipeline: 1

Volunteer efforts and years of research aimed at restoring the oyster population in the waters of Eastchester Bay have, after seven years, come to fruition. On October 9, 2026, volunteers with City Island Oyster Reef carried six concrete reef balls into the bay, near Delmour's Point, marking the organisation's first installation of permanent reef structures. According to the Bronx Times, through sustained research and planning near City Island, volunteers have now begun installing permanent artificial reef structures to encourage the return of native oyster populations.

Each structure weighed approximately 175 pounds, or 79 kilograms, making the installation a huge undertaking for the volunteers and their families, who waded into the water to place them. The installation of the reef balls was therefore a memorial ceremony in itself.

The organisation, which was founded in 2019, has spent much of this time studying the conditions around City Island to understand whether native oysters could survive and eventually establish a self-sustaining reef. Volunteers and researchers had been involved in monitoring water quality in the face of challenges posed by sewage and stormwater runoff.…

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