The Green Grotto of Ischia can only be reached by sea and is located south-east of the island in the bay in front of Punta della Cannuccia. Arriving on a boat and diving into the sea with a few strokes you reach a natural cavity dug into the rock. Without knowledge of the place one would absolutely not say that by going inside the small cave you can find an inlet with a very shallow seabed made of soft sand and where inside a strange phenomenon, which develops by combining the light of the sun with the reflection of the water, which colors the skin an intense green.