A dynamic and changing landscape - Sand movement and beach dynamics have had a dramatic effect on Popham Beach, causing extreme shoreline change and dune erosion.

The rolling Atlantic surf draws thousands of swimmers and surfers alike, and shell collecting is a pastime of many a sea side stroller. Lifeguards are on duty during the summer months, but beachgoers should note that this is a strong surf beach with undertows and occasional rip tides. Swimmers should swim within their abilities and near the lifeguard.