The bay and back again: Recycled oyster shells used in environmental restoration

Oyster Recycling Program

Americorp volunteer, Jacob Shields and Choctawhatchee Basin Alliance (CBA) employee, Rachel Gwin load bins of shucked oysters into a truck to be used in the oyster recycling program.

Kathy Harrison | The Log
Published: Friday, June 20, 2014 at 16:16 PM.

Don’t be surprised if you see a blue truck and a trailer backing up to your favorite seafood restaurants this summer and filling up with oyster shells. The truck belongs to the Choctawhatchee Basin Alliance (CBA) and is stopping by to pick up shucked oysters for their recycle program, Offer Your Shell To Enhance Restoration (O.Y.S.T.E.R.). The program partners with local seafood restaurants to collect shells for use in building new reefs in the Choctawhatchee Bay.

“We started the shell pick up program three years ago,” said CBA Program Specialist, Rachel Gwin. “It was actually my Americorp group that started it. We were all talking about how many oyster shells go to waste, and how they are just taking up room in land-fills.”

Gwin told The Log that in the beginning of the program, the group called local restaurants to see if they would be willing to participate, but now the program is so popular that restaurants have begun contacting them.  

“On our busy days we’ve been averaging 18 bins a day during the summer,” said Gwin. “We go twice a week during the winter, but during spring break and summer we do three days a week, collecting recycling bins full of oysters from 10 area restaurants.” Gwin added that each bin weighs 342 pounds when full, and every year an average of 1,100 cubic yards of recycled shell is collected for the recycling process.

“It’s pretty impressive; it’s actually a lot of oysters,” she said.

Once the shells have been collected, they undergo a three-part process before being placed in the bay.

“We take them back to the campus, and dry them out for at least six weeks — this kills bacteria,” said Gwin, explaining that bacteria is destroyed by the natural process of rain and sunlight. “After they have dried out and baked in the sun, we move them to our bagging area, and use mesh bags to make blocks. Once they are bagged they are ready to use, and we move them out to be placed in our reefs.”



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