No. In New Jersey there are no legal Nude Beaches. Although there are some illegal nude beaches but if you get caught you get a large fine and up to 30 days in prison for public Nudity.
A nude beach is a beach where the local law (or sometimes local custom) allows people to go nude, so long as they stay at the beach. There are nude beaches in many countries all over the world.
Moving water can carry material in solution, but this can be washed away as easily as it might fall out of solution. Waves and ocean currents have trouble picking up silts and clays, and the also...
A sandy beach means a beach where is quite shallow covered mostly with sand..
A sandy beach means a beach which has quite shallow water and the beach is mostly covered with sand..