Florida’s estuaries are some of the most productive ecosystems in the world, where freshwater and saltwater meet to create rich habitats for fish and wildlife. Among the species that depend on these coastal environments is the diamondback terrapin, a small, secretive turtle that spends its life navigating mangroves, tidal creeks, and seagrass-lined shorelines.
In 2025 our Foundation awarded a $10,000 grant through the Discover Florida’s Oceans specialty license plate to the Deering Estate Foundation to better understand diamondback terrapins in southern Biscayne Bay. This project focuses on monitoring terrapin populations and uncovering how they use habitat in and around the Deering Estate, an ecologically important coastal preserve in Miami-Dade County.
Studying diamondback terrapins is no easy task. These turtles are known for their cryptic behavior, often remaining hidden in dense mangroves or submerged in murky water. Early efforts in 2025 included walking surveys, wildlife cameras, and baited traps placed along canals and shoreline habitats. Despite consistent effort, researchers recorded very few sightings and no captures during much of the monitoring season.
By working with experts and reviewing existing research, they determined that terrapins in this region likely reduce activity during the hottest months, a behavior known as estivation. This insight is helping reshape when and how monitoring occurs, with more effort now focused on cooler months when terrapins are more active.
To overcome the challenges of detecting such an elusive species, the project is incorporating new technology. Satellite telemetry tags will allow researchers to track terrapin movements in real time, providing valuable data on where these turtles travel, feed, and nest across Biscayne Bay. This information is critical for identifying key habitats and guiding future conservation efforts.
The project is also building strong partnerships across the region. Collaborators include university researchers, local agencies, and even waterfront communities where terrapins are known to nest. Outreach efforts are helping educate the public about simple actions that can make a difference, such as modifying crab traps with bycatch reduction devices to prevent accidental captures.
Much about the lives of the “diamonds of the coast” remains unknown. By investing in research and innovation, this project is helping fill those knowledge gaps and ensure these unique turtles continue to thrive in Florida’s coastal ecosystems.
If protecting Florida’s oceans and the wildlife that call them home matters to you, consider purchasing the Discover Florida’s Oceans specialty license plate. Buy your plate today
