Marine life

Neptune grass

Posidonia oceanica

Not a seaweed but a true flowering plant that creates underwater meadows in the Mediterranean.

Back to Nature
Photograph of washed-up Posidonia remains; illustrative marine photograph

01. Where to find it

Seabeds where enough sunlight reaches its leaves for photosynthesis.

02. Why it matters

Its underwater meadows provide essential shelter and nursery habitat for many marine species.

03. How to observe and protect it

When snorkelling, do not stand or fin-kick on the vegetation, and never anchor over meadows.

Reference source: Junta de Andalucía · Plan de ordenación de Maro-Cerro Gordo (BOJA, 2015). Some species are rare or protected: being listed in the sources does not mean you are likely to see them.