The government has approved Royal Decree 191/2026, a new regulation aimed at protecting Posidonia oceanica seagrass meadows, a key marine ecosystem in the Mediterranean.

Posidonia is a marine plant that forms extensive underwater meadows. These areas are essential as they produce oxygen, improve water quality, provide habitat for many species, and help protect coastlines from erosion. However, they are very fragile and can take decades to recover if damaged.

What changes with this regulation

The decree introduces several measures to prevent the degradation of these meadows:

• Anchoring on posidonia is prohibited, as it is one of the main causes of damage.
• Eco-friendly mooring systems are promoted, such as buoy fields.
• Restrictions on activities and infrastructure that may affect the seabed.
• Regulation of posidonia remains on beaches, encouraging their preservation.
• Improved monitoring and mapping of seagrass meadows.

Impact on boating

This new legal framework directly affects recreational boating, especially in areas like the Costa Brava where posidonia is common.

Before anchoring, it is important to check nautical charts or apps and use authorized mooring systems where available.