Marine Debris Act Reauthorization Amendments of 2010

Marine Debris Act Reauthorization Amendments of 2010 - Reauthorizes appropriations through FY2015 for, and revises provisions of, the Marine Debris Research, Prevention, and Reduction Act. Replaces provisions establishing within the National Oceanic and Atmospheric Administration (NOAA) the Marine Debris Prevention and Removal Program with provisions establishing the Marine Debris Program.

Revises provisions governing such Program, including by requiring the Administrator of NOAA to: (1) investigate, identify sources of, assess, reduce, remove, and prevent the occurrence of marine debris and to address and prevent adverse impacts of such debris on the marine environment, navigation safety, and the economy; (2) address land-based sources of marine debris, develop fishing gear modifications or alternatives to conventional fishing gear posing a threat to the marine environment, and develop effective nonregulatory measures and incentives to cooperatively reduce the volume of lost and discarded fishing gear and to aid in its recovery; (3) undertake national and regional coordination to assist states, Indian tribes, and regional organizations to address marine debris issues that are particular to their areas; (4) develop tools and products to improve efforts to address marine debris and make them available to researchers, the marine debris community, and the general public; and (5) lead the development and implementation of a strategy to promote international action to reduce the incidence of marine debris.

Requires the Administrator to host a Global Marine Debris Coordination Conference in 2015 and at least every four years thereafter.

Defines "marine debris" to mean any man-made object that: (1) intentionally or unintentionally, is discarded, disposed of, or abandoned; and (2) enters the coastal or marine environment directly from a vessel, a facility, or shore or indirectly, by being carried via a river, stream, or storm drain or by other means.