The term "on-beach" is used to describe a porn scene that takes place on the beach. This implies that the video involves outdoor, beach-themed activities such as sunbathing, playing in the water, or engaging in sexual activity against the backdrop of sand, ocean, and sometimes palm trees. These videos often feature models in swimwear or other revealing attire, with a focus on the natural environment and elements like waves, wind, and sunlight. The "on-beach" tag is typically associated with a relaxed, outdoor atmosphere where characters may engage in various recreational activities, leading to steamy and intimate scenes among the sand and surf.