The remains of the “Portus Julius” are located on a sand and debris bottom consisting of ceramic fragments, tiles, bricks and remains of collapsing wall structures. Along the route of the visit it is possible to observe numerous remains of floors, columns, marble fragments, sections of walls preserved for considerable lengths, in opus reticulatum and latericium.
A peculiar feature of the site is the presence of numerous floors, both mosaic and cocciopesto with white limestone tesserae to form decorative geometric patterns, very well preserved on large surfaces.
Among the ravines of the submerged walls, often made unrecognisable by the luxuriant algae, there is also an enormous variety of both plant and animal organisms that continue to inhabit the ancient port.