TOPSHOT - French archaeologist Lenaic Riaudel swims near the remains of the old Roman harbour of Olbia, near Hyeres, southeastern France, on November 28, 2018. - The beach of Almanarre in Hyeres, southeastern France, is a paradise for kite- and windsurfers - and also France's only underwater archeological site. Beneath the water lie the 2000-year-old remains of the port of the Roman city of Olbia. (Photo by Boris HORVAT / AFP)