A system and method to reduce fouling of a surface subjected to an aquatic environment with a light source. According to one aspect, an antifouling system including an LED for emitting UV radiation, one or more mounts for directing emitted UV radiation toward the surface, and control circuitry for driving the LED disposed in a watertight housing. According to another aspect, an antifouling system which employs a fluorescent lamp disposed within a pressure vessel including a UV-transmissive material to allow UV light to pass through the pressure vessel and reduce bio-fouling of any surface.
