The current jurisdictional status of the Mediterranean Sea is remarkable. Nearly 50 per cent of the Mediterranean waters are high seas and therefore beyond the jurisdiction of coastal States. This situation means that there are no points in the Mediterranean Sea where the coasts of two States would be more than 400 nautical miles apart. Such a legal situation generally prevents coastal States from adopting and enforcing their laws on the Mediterranean high seas, in respect of many important fields such as the protection and preservation of the marine environment, as well as the conservation of marine living resources.