Divers Discover Mesmerizing Roman Mosaic Beneath the Sea

And how did they hold the tools with their fins?

In its heyday, the house sat in a prime location overlooking the sea. However, the region is also home to the Phlegraean Fields, a sprawling volcanic area near Naples. Due to bradyseism, a geological phenomenon in which the ground sinks or rises due to pressure changes under the earth’s surface, the house ultimately fell into the Gulf of Pozzuoli.