The posidonia surveillance service has been in existence for five years. | Govern de les Illes Balears
Over the summer, the Balearic government's posidonia surveillance service had dealings with 144,513 boats anchored in Balearic waters. Of these, just 5,612 were told to move. The environment minister, Miquel Mir, says that 4.7% was a "remarkably low figure".