This document presents a multiple alert and deterrent device that may be used in underwater environments to present visual and audio signals to alert other divers, and simultaneously generate a voltage that serves as a deterrent to sharks. The activation of all alert and deterrent components occurs simultaneously when a user activates the device. Device activation may occur as the result of a user selection, or may be configured to occur automatically when a user removes the device from a connection to the user's clothing or any equipment associated with the user to which the device is attached.
