Bringing Marine Life Back to South Florida’s ‘Forgotten Edge’

Pompano Beach, FL – A novel approach to coastal restoration is underway in South Florida, aiming to revitalize marine habitats along the region’s extensive canal systems. The project focuses on integrating nature-inspired designs into existing infrastructure, specifically seawalls, to encourage the return of marine wildlife.

The Problem with Traditional Seawalls

For decades, seawalls constructed of reinforced concrete and vinyl have been the standard for protecting property and stabilizing coastlines in South Florida. Whereas effective at preventing erosion and safeguarding land, these structures create a stark, unnatural barrier that marine organisms struggle to inhabit. As Arthur Tiedeman, of APH Marine Construction, explains, “It’s not a natural shoreline like mangroves and sand. It’s just a straight giant wall.” This homogeneity eliminates crucial habitat for oysters, crabs, fish, and birds, contributing to declining populations and worsening water quality.

A New Approach: Bio-Integrated Planters

To address this issue, Tiedeman’s company is installing two innovative mangrove planters on a recently constructed seawall in a residential canal. Designed by Keith Van de Riet, a professor at the University of Kansas, these planters are pockmarked and grooved to mimic the complex textures of oyster reefs and mangrove roots. The intention is to provide a foothold for marine life to re-establish itself on the otherwise barren surface. “Even these tiny little pores you get, those are little pockets that tiny organisms will start to take up residence in,” says Van de Riet.

A Growing Market for Holistic Marine Infrastructure

This project represents a growing trend toward more ecologically conscious coastal engineering. A commercial market is emerging, offering homeowners and municipalities products designed to integrate natural elements into marine infrastructure. This shift reflects a broader recognition that protecting property and preserving the environment are not mutually exclusive goals. Tiedeman notes, “There’s a growing recognition that municipalities and property owners necessitate to ‘improve the shoreline and build infrastructure with the environment in mind.’”

The Importance of Mangroves and Oyster Reefs

Mangrove forests and oyster reefs are vital components of healthy coastal ecosystems. Mangroves act as natural barriers against storm surge, reduce wind speeds, and provide critical habitat for numerous species . Oyster reefs filter water, create habitat, and help build land over time. Yet, both are under threat from coastal development and accelerating sea-level rise. According to a study published in 2022, South Florida mangrove communities will begin a widespread conversion to estuarine conditions by 2040-2050 .

Restoration Efforts Across Florida

Beyond the planters in Pompano Beach, restoration efforts are underway throughout Florida. In Southwest Florida, nearly 300 mangrove propagules were planted on Bowditch Point by students from Florida Gulf Coast University and Island Coast High School . Organizations like Coastlove and Plant a Million Corals Foundation are actively planting mangrove trees in South Florida and the Keys, having planted approximately 7,100 trees since December . Miami Beach has likewise installed a “living seawall” designed to mimic mangrove roots and provide habitat.

The Future of Coastal Infrastructure

Experts emphasize the need for widespread policy changes and increased investment in ecologically sound coastal infrastructure. Rachel Gittman, a coastal ecologist at East Carolina University, highlights the importance of mimicking natural systems and avoiding repeating past mistakes. “We are in this critical period where we could make huge leaps in terms of how our infrastructure is designed in this country if we make thoughtful investments and we don’t just build exactly what we had 50 years ago,” she says. The success of projects like the mangrove planters in Pompano Beach could pave the way for a more sustainable and resilient coastline in South Florida and beyond.