Abstract: A submersible light includes a back cover which mounts the light. A lens assembly is mounted on the back cover and forms a downwardly-open enclosure therewith. A light assembly, which includes an illumination subassembly, is received in the enclosure. The light assembly includes a housing which engages a sealing gasket within the enclosure for sealing the light assembly against water infiltration. A second barrier against water infiltration is provided by the bell jar effect of the back cover of the lens assembly, which collectively form a downwardly-open enclosure for receiving the light assembly.