Top 10 Clearest Water Beaches in the World

9. Cala Mariolu, Italy

Located on the eastern coast of Sardinia, Cala Mariolu is a hidden gem celebrated for its crystal-clear waters and pink-white pebbled shore. Nestled at the base of towering limestone cliffs in the Gulf of Orosei, this beach offers a breathtaking blend of natural beauty and tranquil seclusion. Its name comes from local tales of a monk seal, nicknamed “Mariolu” (the thief), known for stealing fishermen’s catch. Today, it steals hearts with its unbelievably transparent waters and also unspoiled charm.

Cala Mariolu is a paradise for snorkelers and divers, thanks to its exceptional water clarity and vibrant marine life. The seabed features a mix of smooth stones and sandy patches, offering perfect visibility for underwater exploration. Accessible mainly by boat or a rugged hike, the effort to reach this beach is rewarded with serene views, minimal crowds, and some of the clearest water in all of Europe. It’s a must-see for anyone craving a pure and peaceful Mediterranean escape.