The bill aims to support coastal energy, fisheries and seafood industry, shoreside infrastructure, and workforce development. It includes tax credits for hydroelectric facility improvements, transitioning to alternative fuel commercial fishing vessels, and rural coastal community processing grants. The bill also expands Department of Agriculture loans and grants to include commercial fishing and fish processing activities, establishes grant programs to improve working waterfront areas, enhances safety standards for fishing vessels, and allocates funding for marine sector innovation and environmental conservation. Additionally, it requires the mapping and inventorying of coastal and Great Lakes ecosystems, and authorizes grants for coastal natural infrastructure projects and ocean acidification research and monitoring.