The Department of Defense (DOD) is seeking proposals for their SBIR 24.1 BAA solicitation. The specific topic of the solicitation is "Energy Harvesting for Underwater Persistent Systems" and is being conducted by the Navy. The objective of this research is to develop innovative power generation or energy harvesting technologies to extend the life of underwater electrical systems. The Navy is looking for solutions to enhance the capabilities of underwater persistent systems by extracting energy from the seabed or underwater environment, allowing for continuous reliable operations without the need for large, specialized energy storage. The proposed power source should have a minimum storage shelf life of six years without maintenance and a desired form factor of no greater than 1,000 cubic inches. The project will be conducted in two phases, with Phase I focusing on concept development and feasibility testing, and Phase II involving the development and delivery of a prototype for evaluation. The work under this effort may be classified under Phase II. The technology developed under this project has potential applications in subsea oil and gas pipeline inspection and other domains requiring subsea platform autonomy. The solicitation is closed, and more information can be found on the Defense SBIR/STTR website.