Rare Pink Calcified Seaweed Discovered Off South Cornwall Coast

Divers have made a significant discovery of extensive beds of rare pink calcified seaweed, known as maerl, off the coast of south Cornwall. These maerl beds are vital components of the marine ecosystem, serving as the foundation for local food chains. Experts emphasize the ecological importance of these habitats, which support a diverse range of marine life. During a recent survey, a team of specialist divers identified 79 different animal species inhabiting the maerl beds near the Roseland Peninsula and St Austell Bay. Natural England has highlighted the critical role of maerl in sustaining fish populations and maintaining healthy fisheries, categorizing it as an “irreplaceable habitat.” This discovery underscores the need for further research and conservation efforts in the region. While maerl beds in the Fal and Helford estuaries have been documented, knowledge about those along Cornwall’s south coast remains limited. The recent expedition, conducted by Natural England in collaboration with Porthkerris Divers and utilizing an underwater drone, aimed to enhance understanding of these unique marine environments. The findings from this expedition are expected to contribute to ongoing conservation initiatives and raise awareness about the importance of protecting these fragile ecosystems. As marine habitats face increasing threats, the discovery of these maerl beds highlights the need for continued exploration and preservation efforts in Cornwall’s coastal waters.