Poças das Lesmas (Piscinas Naturais do Seixal)

Seixal's natural pools, near Praia da Laje: black volcanic rock formations enclosing uniquely shaped basins, where turquoise water contrasts with the dark stone. Since 2024 the site has had a lifeguard, which justifies the entry fee (€2.50); toilets, showers and a bar. Extreme caution: large waves can rise without warning — watch the sea and avoid the most exposed areas. Porto Moniz municipality also stresses caution because of sea conditions. Not an official bathing water in 2026: no lifeguard service is guaranteed; follow the notices on site and the flags.