Nantucket is actively constructing oyster reefs, such as the one in Polpis Harbor built in 2021 with volunteer support and costing around $20,000, which have demonstrated positive impacts on storm resilience and ecological health.

Since 2014, Nantucket has maintained a shell recycling program where restaurant oyster shells are collected, cured for a year to eliminate pathogens, and then repurposed to create new oyster habitats.

This circular approach of recycling shells to restore ecosystems exemplifies a model that could inspire shoreline preservation efforts globally, combining ecological restoration with community engagement.

Experts believe expanding these oyster reefs could be a cost-effective method of shoreline protection, especially if funded by local wealthy homeowners who benefit from increased property values and shoreline stability.

Nantucket’s innovative oyster shell recycling and reef restoration efforts have been featured on 'Living on Earth,' highlighting their role in coastal protection and oyster population support.

The cured shells are sent to hatcheries where oyster larvae are raised; once mature, they are attached to recycled shells and placed on reefs to promote new oyster populations.

Oyster reefs worldwide have declined by approximately 85% due to overharvesting, disease, pollution, and other factors, which has compromised their natural ability to protect coastlines from flooding and storms.