Posidonia rhizomes grow at a rate of only 1-3 cm per year! It is therefore particularly valuable and is why it is protected:
Failure to comply with the obligations arising from national regulations is liable to criminal sanctions (cf. art L415-3 of the environmental code) and administrative sanctions (order of January 11, 2012, law relating to environmental responsibility of August 1, 2008).
Photo : Stefaniia