This bill, titled the "Save Our Seas 2.0 Amendments Act," seeks to enhance the effectiveness and administration of federal marine debris initiatives by amending both the Save Our Seas 2.0 Act and the Marine Debris Act . It specifically targets improvements to the National Oceanic and Atmospheric Administration's (NOAA) Marine Debris Program, streamlining its ability to enter into grants, cooperative agreements, contracts, and other agreements. A key change allows the Under Secretary to provide in-kind contributions for projects where NOAA derives a benefit, expanding the program's operational flexibility. The legislation also significantly modifies the Marine Debris Foundation , clarifying its status as a corporation and expanding its purposes to include engagement with Indian Tribes and Tribal Governments . It revises the appointment process and terms for the Foundation's Board of Directors and establishes a Chief Executive Officer position. Furthermore, the bill mandates the development of best practices for outreach to Indian Tribes and Tribal Governments, ensuring technical assistance and awareness of available programs. It reauthorizes appropriations for marine debris activities through fiscal year 2029 and introduces new definitions to clarify terms like "circular economy," "coastal shoreline community," and "Tribal Government" within the context of marine debris efforts.