Posidonia Seagrass
Posidonia oceanica
Sighting evidence at Secca del Cristo, Portofino
The dense posidonia meadows at Secca del Cristo are among the healthiest in the northern Mediterranean, providing nursery habitat for dozens of juvenile reef fish species. This endemic Mediterranean seagrass produces oxygen, stabilises sediment, and supports the entire reef food web. Divers drift slowly above the swaying meadows to spot pipefish, seahorses, and cuttlefish sheltering within the leaf blades.
Evidence at this site
No confirmed records on file at this site
Posidonia Seagrass is listed as a curated species here based on historical reports.