Crvena Luka nature (I.)
Posidonia, also known as Neptune grass or Mediterranean tapeweed (Posidonia oceanica), is a marine flowering plant named after the Greek god of the sea – Poseidon.
It is endemic to the Mediterranean Sea, meaning it grows exclusively in this region, and it is the most widespread marine flowering plant in the Adriatic Sea!
1. Posidonia oceanica – Importance and Ecological Role
Posidonia meadows represent areas of great biodiversity – more than 30 species of algae can be found on each leaf. Additionally, the meadows serve as habitats, spawning grounds, nurseries, and feeding areas for over 100 species of fish.
They are also called “oxygen factories” because they produce large amounts of oxygen, and through their ability to capture and store carbon dioxide from the atmosphere, they help mitigate the effects of climate change by reducing the concentration of greenhouse gases.
They improve the quality and clarity of seawater by acting as natural filters – retaining and absorbing suspended particles and nutrients. They also play an important role in protecting the coast from erosion, storms, and waves, thanks to their dense root systems, which help maintain the stability of coastal infrastructure.
2. Distribution and Conservation
Posidonia forms underwater meadows on muddy-sandy seabeds. From the sea surface, it appears as dark patches, so it can be easily spotted even in our bay.
Posidonia meadows are the most important coastal ecosystem in the Mediterranean Sea, but they develop in areas under significant pressure from human activity.
Due to their ecological importance, sensitivity, and vulnerability, Posidonia is a strictly protected species in Croatia.
