Abstract: A high intensity light is mounted and sealed in a polyvinyl chloride (PVC) receptacle and extension system. The receptacle is adapted to be anchored on the bottom of a channel or an underwater area adjacent to a structure which provides alternating current (AC) power from a shoreside mains. The high intensity lamp may be sealed within a transparent enclosure, but is preferably left exposed to minimize sealife growth on the lamp. The PVC receptacle is preferably weighted, such as for example with concrete, to help anchor the receptacle to the bottom. The receptacle further includes rebar extending from the receptacle to penetrate the hard pack below the silt on the bottom.