Dalawella Beach is a sheltered turtle beach on Sri Lanka's south coast. The lagoon-like shallows have sand, reef chunks and seagrass, so it works best as a calm-water snorkel stop rather than a deep-water dive. Mornings are the easiest window; later in the day, swell can push over the back reef wall and make the beach feel rougher. The draw is the turtle encounter, but it can get busy, so a respectful, early visit is the best fit.