For those with a love for underwater activities Castro is a must-visit destination. Here there is a fabulous varied seabed full of flora and fauna, said to be a truly amazing experience. There are many centres offering scuba diving, with organised courses and group dives, visiting underwater walls and caves giving a speleological itinerary. Sentiero Blu is one of the best underwater trips along the stretch of coastline between Grotta Zinzulusa and Grotta Romanelli and one of the most interesting areas of the Mediterranean.
