SUBMERGED ROMAN CONCRETE

What lies beneath the surface… can cut you right up if you’re not careful and next thing you know you’ll be on the beach getting bandaged by a Russian spy in Italy and following her on a moped across town to learn the ways of a thing called “apertivo” and “limoncello” and “grappa”.
I mean, what I meant to say is that those square blocks in the water are the submerged bases of some long-gone Roman structure and if you happen to brush against them while swimming here, they will cut you right up. Then, yeah, all that other stuff too…