The Pelagos Sanctuary is a maritime area covering 87,500 km2, and is the subject of an agreement between Italy, Monaco and France. Its purpose is to protect marine mammals in the Mediterranean.
On 25 November 1999, the Pelagos Agreement, which created a sanctuary for marine mammals in the Mediterranean, was signed in Rome by France, Italy and the Principality of Monaco. The three countries were keen to take joint action to protect cetaceans from disruption caused by human activities: noise pollution, risks of collision with commercial shipping, tourist activities and plastic pollution.