Church Installs Eco-Friendly Living Seawall
- Church-by-the-Sea in Fort Lauderdale adds a living seawall to its 980-foot waterfront. - The design supports marine life and buffers against rising seas. - Historic site on barrier island pioneers environmental waterfront innovation.wlrn.org
1/ Church-by-the-Sea in Fort Lauderdale completed a 980-foot living seawall along its waterfront on May 13, 2026. The historic church, located on Lauderdale-by-the-Sea barrier island, installed the structure to combat erosion and sea level rise while creating habitat for marine life. 2/ Unlike traditional concrete seawalls, this one uses interlocking precast concrete units filled with sediment to grow oysters, mussels, and algae. These organisms form a natural buffer that absorbs wave energy—up to 50% more effectively than smooth concrete, according to coastal engineers. The design mimics natural reefs. 3/ The project cost $1.2 million and was funded by a mix of church donations, state grants from Florida's Resilient Florida Program, and federal funds via the Bipartisan Infrastructure Law. Installation took six months, starting in late 2025, with contractors from Coastal Marine Construction anchoring the units along the church's full 980-foot exposure to the Atlantic. 4/ Church-by-the-Sea, founded in 1950, sits on a low-lying barrier island vulnerable to king tides and hurricanes. Fort Lauderdale has seen 8 inches of sea level rise since 1993, with projections of another 2 feet by 2060 from NOAA data. The seawall replaces a failing 1970s concrete barrier that no longer held back surges. 5/ Living seawalls boost biodiversity: oysters filter up to 50 gallons of water per day each, improving clarity and supporting fish populations. Early monitoring shows juvenile snappers and crabs colonizing the structure within weeks. The church plans quarterly dives to track growth. 6/ This is Florida's first full-scale living seawall on a private historic site, but similar tech is expanding. Miami installed 500 feet in 2024; Tampa Bay has 2 miles underway. Engineers from the University of Miami consulted on the Church-by-the-Sea design, calling it a "model for coastal churches and marinas." 7/ Maintenance involves annual sediment replenishment and biofouling checks, budgeted at $50,000 yearly. The church's pastor, Rev. David Chilton, said: "We're stewards of this waterfront—protecting it for worship and wildlife." Next: public tours start June 1, 2026.
