Directs the Commandant of the Coast Guard to undertake measures to reduce violations of MARPOL Annex V (Annex V of the International Convention for the Prevention of Pollution from Ships, 1973) and the Act to Prevent Pollution from Ships with respect to the discard of plastics and other garbage from vessels.

Establishes an Interagency Committee on Marine Debris to: (1) coordinate a comprehensive program of marine debris research and activities among Federal agencies, in cooperation with nongovernmental organizations, industry, universities, State governments, Indian tribes, and other nations; and (2) foster cost-effective mechanisms to identify, determine sources of, reduce, and prevent marine debris and its adverse impact on the marine environment and navigational safety.

Requires the Administrator of NOAA (Administrator) to: (1) undertake marine debris mapping, impact assessment, prevention, and removal efforts, with a focus on marine debris posing a threat to living marine resources (particularly endangered or protected species) and navigation safety; (2) improve efforts and actively seek to prevent and reduce fishing gear losses, as well as their adverse impacts on living marine resources and navigation safety; and (3) undertake outreach and education of the public and other stakeholders in the fishing, fishing gear manufacturers, and other marine-dependent industries on sources of and threats associated with marine debris and approaches to identify, determine sources of, assess, reduce, and prevent such debris and its adverse impacts on the marine environment and navigational safety.

Prescribes guidelines for the Administrator to provide financial assistance, in the form of grants, through the Program for such projects.

(Sec. 4) Directs the Commandant of the Coast Guard to undertake specified measures to reduce violations of MARPOL Annex V (Annex V of the International Convention for the Prevention of Pollution from Ships, 1973) and the Act to Prevent Pollution from Ships with respect to the discard of plastics and other garbage from vessels.

(Sec. 5) Establishes an Interagency Committee on Marine Debris (Committee) to: (1) coordinate a comprehensive program of marine debris research and activities among Federal agencies, in cooperation with nongovernmental organizations, industry, universities, State governments, Indian tribes, and other nations; and (2) foster cost-effective mechanisms (including joint funding of research, mitigation, and prevention strategies) to identify, determine sources of, assess, reduce, and prevent marine debris and its adverse impact on the marine environment and navigational safety.

Directs the Committee to report to Congress on the source of marine debris, the ecological and economic impact of marine debris, alternatives for reducing, mitigating, preventing, and controlling the harmful affects of marine debris, the social and economic costs and benefits of such alternatives, and recommendation regarding both domestic and international marine debris issues. Requires a biennial status update to Congress.

Directs the Administrator, in cooperation with the Administrator of the Environmental Protection Agency, to utilize the marine debris data to assist: (1) the Committee in ensuring coordination of research, monitoring, education, and regulatory actions; and (2) the Coast Guard in assessing the effectiveness of this Act and the Act to Prevent Pollution from Ships in ensuring compliance, under the Marine Plastic Pollution Research and Control Act of 1987, with MARPOL Annex V.

Amends the Marine Plastic Pollution Research and Control Act of 1987 to conform with this Act by repealing the mandate for the existing Department of Commerce Marine Debris Coordinating Committee.

(Sec. 6) Directs the Committee to develop a strategy and pursue, in the International Maritime Organization and other appropriate international and regional forums, international action to reduce the incidence of marine debris.

(Sec. 7) Directs the Administrator, in coordination with the Committee, to maintain a Federal information clearinghouse on marine debris that will be available to researchers and other interested parties to improve source identification, data sharing, and monitoring efforts through collaborative research and open sharing of data.

(Sec. 9) Authorizes appropriations for FY 2006 through 2010.

Requires the Administrator of NOAA (Administrator) to: (1) undertake marine debris mapping, impact assessment, prevention, and removal efforts, with a focus on marine debris posing a threat to living marine resources (particularly endangered or threatened and protected species) and navigation safety; (2) improve efforts and actively seek to prevent and reduce fishing gear losses, as well as their adverse impacts on living marine resources and navigation safety; and (3) undertake outreach and education of the public and other stakeholders in the fishing, fishing gear manufacturers, and other marine-dependent industries on sources of and threats associated with marine debris and approaches to identify, determine sources of, assess, reduce, and prevent such debris and its adverse impacts on the marine environment and navigational safety.

Prescribes guidelines for the Administrator to provide financial assistance, in the form of grants, through the Program for such projects.

(Sec. 4) Directs the Commandant of the Coast Guard (CG) to undertake specified measures to reduce violations of MARPOL Annex V (Annex V of the International Convention for the Prevention of Pollution from Ships, 1973) and the Act to Prevent Pollution from Ships with respect to the discard of plastics and other garbage from vessels.

Requires the Commandant of the CG to expedite implementation of the CG's responsibilities to on-shore oil and gas spills.

(Sec. 5) Establishes an Interagency Committee on Marine Debris (Committee) to: (1) coordinate a comprehensive program of marine debris research and activities among federal agencies, in cooperation with nongovernmental organizations, industry, universities, state governments, Indian tribes, and other nations; and (2) foster cost-effective mechanisms (including joint funding of research, mitigation, and prevention strategies) to identify, determine sources of, assess, reduce, and prevent marine debris and its adverse impact on the marine environment and navigational safety.

Directs the Committee to report to Congress on the source of marine debris, its ecological and economic impact, alternatives for reducing, mitigating, preventing, and controlling its harmful affects, the social and economic costs and benefits of such alternatives, and recommendations regarding both domestic and international issues. Requires a biennial status update to Congress.

Directs the Administrator, in cooperation with the Administrator of the Environmental Protection Agency, to utilize the marine debris data to assist: (1) the Committee in ensuring coordination of research, monitoring, education, and regulatory actions; and (2) the CG in assessing the effectiveness of this Act and the Act to Prevent Pollution from Ships in ensuring compliance, under the Marine Plastic Pollution Research and Control Act of 1987, with MARPOL Annex V.

Amends the Marine Plastic Pollution Research and Control Act of 1987 to conform with this Act by repealing the mandate for the existing Department of Commerce Marine Debris Coordinating Committee.

(Sec. 6) Directs the Committee to develop a strategy that may be pursued by the United States in the International Maritime Organization and other appropriate international and regional forums to reduce the incidence of marine debris.

(Sec. 7) Directs the Administrator, in coordination with the Committee, to maintain a federal information clearinghouse on marine debris that will be available to researchers and other interested parties to improve source identification, data sharing, and monitoring efforts through collaborative research and open sharing of data.

(Sec. 9) Declares that nothing in this Act supersedes, or limits the authorities of the Secretary of the Interior under, the Outer Continental Shelf Lands Act.

(Sec. 10) Authorizes appropriations for FY2006-FY2010.

Requires the Administrator of NOAA (Administrator), subject to the availability of appropriations, to: (1) undertake marine debris mapping, impact assessment, prevention, and removal efforts, with a focus on marine debris posing a threat to living marine resources and navigation safety; (2) improve efforts to reduce adverse impacts of lost and discarded fishing gear on living marine resources and navigation safety; and (3) undertake outreach and education of the public and other stakeholders in the fishing, fishing gear manufacturers, other marine-dependent, and plastic and waste management industries, on sources of, and threats associated with, marine debris and approaches to identify, determine sources of, assess, reduce, and prevent such debris and its adverse impacts on the marine environment and navigational safety.

Prescribes guidelines for the Administrator to enter into cooperative agreements and contracts and provide financial assistance in the form of grants through the Program for such projects.

(Sec. 4) Directs the Commandant of the Coast Guard (CG) to report to Congress on the implementation of MARPOL Annex V (Annex V of the International Convention for the Prevention of Pollution from Ships, 1973) and the Act to Prevent Pollution from Ships with respect to the discard of plastics and other garbage from vessels.

Requires the Commandant of the CG to develop: (1) a voluntary reporting program and establish a central reporting location to receive information from commercial vessel operators, recreational boaters, and the general public about incidents of damage to vessels caused by marine debris and observed violations relating to disposal of plastics and other marine debris; and (2) voluntary measures to prevent and reduce the loss and discard of fishing gear from vessels.

(Sec. 5) Amends the the Marine Plastic Pollution Research and Control Act of 1987 to establish an Interagency Marine Debris Coordinating Committee (eliminates the existing Department of Commerce Marine Debris Coordinating Committee) to coordinate a comprehensive program of marine debris research and activities among federal agencies, in cooperation with nongovernmental organizations, industry, universities, states , Indian tribes, and other nations.

Directs the Interagency Committee to report to Congress on the source of marine debris, its ecological and economic impact, alternatives for reducing, mitigating, preventing, and controlling its harmful affects, the social and economic costs and benefits of such alternatives, and recommendations to reduce marine debris both domestically and internationally. Requires a biennial status update to Congress.

(Sec. 6) Directs the Administrator, in coordination with the Interagency Committee, to: (1) maintain a federal information clearinghouse on marine debris that will be available to researchers and other interested parties to improve marine debris source identification, data sharing, and monitoring efforts through collaborative research and open sharing of data; and (2) take steps to ensure confidentiality of such data, especially proprietary information required by the Administrator to be submitted by the fishing industry.

(Sec. 8) Prohibits anything in this Act from superseding, or limiting the authority of the Secretary of the Interior under, the Outer Continental Shelf Lands Act.

(Sec. 9) Authorizes appropriations for FY2006-FY2010.

Requires the Administrator of NOAA (Administrator), subject to the availability of appropriations, to: (1) undertake marine debris mapping, impact assessment, prevention, and removal efforts, with a focus on marine debris posing a threat to living marine resources and navigation safety; (2) improve efforts to reduce adverse impacts of lost and discarded fishing gear on living marine resources and navigation safety; and (3) undertake outreach and education of the public and other stakeholders in the fishing, fishing gear manufacturers, other marine-dependent, and plastic and waste management industries, on sources of, and threats associated with, marine debris and approaches to identify, determine sources of, assess, reduce, and prevent such debris and its adverse impacts on the marine environment and navigational safety.

Prescribes guidelines for the Administrator to enter into cooperative agreements and contracts and provide financial assistance in the form of grants through the Program for such projects.

(Sec. 4) Directs the Commandant of the Coast Guard (CG) to: (1) take actions to reduce violations of and improve implementation of MARPOL Annex V (Annex V of the International Convention for the Prevention of Pollution from Ships, 1973) and the Act to Prevent Pollution from Ships with respect to the discard of plastics and other garbage from vessels; (2) develop and implement a plan to improve ship-board waste management; (3) take actions to improve international cooperation to reduce marine debris; and (4) establish a voluntary reporting program for commercial vessel operators and recreational boaters to report incidents of damage to vessels and disruption of navigation caused by marine debris, including observed violations relating to disposal of plastics and other marine debris. Requires the Commandant of the CG to report to Congress on the CG's progress in implementing such actions.

Requires the Commandant of the CG to enter into an agreement with the National Research Council to conduct, and submit to Congress, a report on the effectiveness of international and national measures to prevent and reduce marine debris and its impact.

(Sec. 5) Amends the the Marine Plastic Pollution Research and Control Act of 1987 to establish an Interagency Marine Debris Coordinating Committee (eliminates the existing Department of Commerce Marine Debris Coordinating Committee) to coordinate a comprehensive program of marine debris research and activities among federal agencies, in cooperation with nongovernmental organizations, industry, universities, states, Indian tribes, and other nations.

Directs the Interagency Committee to report to Congress on the source of marine debris, its ecological and economic impact, alternatives for reducing, mitigating, preventing, and controlling its harmful affects, the social and economic costs and benefits of such alternatives, and recommendations to reduce marine debris both domestically and internationally. Requires a biennial status update to Congress.

(Sec. 6) Directs the Administrator, in coordination with the Interagency Committee, to: (1) maintain a federal information clearinghouse on marine debris that will be available to researchers and other interested parties to improve marine debris source identification, data sharing, and monitoring efforts through collaborative research and open sharing of data; and (2) take steps to ensure confidentiality of such data, especially proprietary information required by the Administrator to be submitted by the fishing industry.

(Sec. 8) Prohibits anything in this Act from superseding, or limiting the authority of the Secretary of the Interior under, the Outer Continental Shelf Lands Act.

(Sec. 9) Authorizes appropriations for FY2006-FY2010.

Requires the Administrator of NOAA (Administrator), subject to the availability of appropriations, to: (1) undertake marine debris mapping, impact assessment, prevention, and removal efforts, with a focus on marine debris posing a threat to living marine resources and navigation safety; (2) improve efforts to reduce adverse impacts of lost and discarded fishing gear on living marine resources and navigation safety; and (3) undertake outreach and education of the public and other stakeholders in the fishing, fishing gear manufacturers, other marine-dependent, and plastic and waste management industries, on sources of, and threats associated with, marine debris and approaches to identify, determine sources of, assess, reduce, and prevent such debris and its adverse impacts on the marine environment and navigational safety.

Prescribes guidelines for the Administrator to enter into cooperative agreements and contracts and provide financial assistance in the form of grants through the Program for such projects.

(Sec. 4) Directs the Commandant of the Coast Guard (CG) to: (1) take actions to reduce violations of and improve implementation of MARPOL Annex V (Annex V of the International Convention for the Prevention of Pollution from Ships, 1973) and the Act to Prevent Pollution from Ships with respect to the discard of plastics and other garbage from vessels; (2) develop and implement a plan to improve ship-board waste management; (3) take actions to improve international cooperation to reduce marine debris; and (4) establish a voluntary reporting program for commercial vessel operators and recreational boaters to report incidents of damage to vessels and disruption of navigation caused by marine debris, including observed violations relating to disposal of plastics and other marine debris. Requires the Commandant of the CG to report to Congress on the CG's progress in implementing such actions.

Requires the Commandant of the CG to enter into an agreement with the National Research Council to conduct, and submit to Congress, a report on the effectiveness of international and national measures to prevent and reduce marine debris and its impact.

(Sec. 5) Amends the the Marine Plastic Pollution Research and Control Act of 1987 to establish an Interagency Marine Debris Coordinating Committee (eliminates the existing Department of Commerce Marine Debris Coordinating Committee) to coordinate a comprehensive program of marine debris research and activities among federal agencies, in cooperation with nongovernmental organizations, industry, universities, states, Indian tribes, and other nations.

Directs the Interagency Committee to report to Congress on the source of marine debris, its ecological and economic impact, alternatives for reducing, mitigating, preventing, and controlling its harmful affects, the social and economic costs and benefits of such alternatives, and recommendations to reduce marine debris both domestically and internationally. Requires a biennial status update to Congress.

(Sec. 6) Directs the Administrator, in coordination with the Interagency Committee, to: (1) maintain a federal information clearinghouse on marine debris that will be available to researchers and other interested parties to improve marine debris source identification, data sharing, and monitoring efforts through collaborative research and open sharing of data; and (2) take steps to ensure confidentiality of such data, especially proprietary information required by the Administrator to be submitted by the fishing industry.

(Sec. 8) Prohibits anything in this Act from superseding, or limiting the authority of the Secretary of the Interior under, the Outer Continental Shelf Lands Act.

(Sec. 9) Authorizes appropriations for FY2006-FY2010.

Marine Debris Research, Prevention, and Reduction Act - (Sec. 3) Establishes within the National Oceanic and Atmospheric Administration (NOAA) a Marine Debris Prevention and Removal Program to reduce and prevent the occurrence and adverse impacts of marine debris on the marine environment and navigation safety.

Requires the Administrator of NOAA (Administrator), subject to the availability of appropriations, to: (1) undertake marine debris mapping, impact assessment, prevention, and removal efforts, with a focus on marine debris posing a threat to living marine resources and navigation safety; (2) improve efforts to reduce adverse impacts of lost and discarded fishing gear on living marine resources and navigation safety; and (3) undertake outreach and education of the public and other stakeholders in the fishing, fishing gear manufacturers, other marine-dependent, and plastic and waste management industries, on sources of, and threats associated with, marine debris and approaches to identify, determine sources of, assess, reduce, and prevent such debris and its adverse impacts on the marine environment and navigational safety.

Prescribes guidelines for the Administrator to enter into cooperative agreements and contracts and provide financial assistance in the form of grants through the Program for such projects.

(Sec. 4) Directs the Commandant of the Coast Guard (CG) to: (1) take actions to reduce violations of and improve implementation of MARPOL Annex V (Annex V of the International Convention for the Prevention of Pollution from Ships, 1973) and the Act to Prevent Pollution from Ships with respect to the discard of plastics and other garbage from vessels; (2) develop and implement a plan to improve ship-board waste management; (3) take actions to improve international cooperation to reduce marine debris; and (4) establish a voluntary reporting program for commercial vessel operators and recreational boaters to report incidents of damage to vessels and disruption of navigation caused by marine debris, including observed violations relating to disposal of plastics and other marine debris. Requires the Commandant of the CG to report to Congress on the CG's progress in implementing such actions.

Requires the Commandant of the CG to enter into an agreement with the National Research Council to conduct, and submit to Congress, a report on the effectiveness of international and national measures to prevent and reduce marine debris and its impact.

(Sec. 5) Amends the the Marine Plastic Pollution Research and Control Act of 1987 to establish an Interagency Marine Debris Coordinating Committee (eliminates the existing Department of Commerce Marine Debris Coordinating Committee) to coordinate a comprehensive program of marine debris research and activities among federal agencies, in cooperation with nongovernmental organizations, industry, universities, states, Indian tribes, and other nations.

Directs the Interagency Committee to report to Congress on the source of marine debris, its ecological and economic impact, alternatives for reducing, mitigating, preventing, and controlling its harmful affects, the social and economic costs and benefits of such alternatives, and recommendations to reduce marine debris both domestically and internationally. Requires a biennial status update to Congress.

(Sec. 6) Directs the Administrator, in coordination with the Interagency Committee, to: (1) maintain a federal information clearinghouse on marine debris that will be available to researchers and other interested parties to improve marine debris source identification, data sharing, and monitoring efforts through collaborative research and open sharing of data; and (2) take steps to ensure confidentiality of such data, especially proprietary information required by the Administrator to be submitted by the fishing industry.

(Sec. 8) Prohibits anything in this Act from superseding, or limiting the authority of the Secretary of the Interior under, the Outer Continental Shelf Lands Act.

(Sec. 9) Authorizes appropriations for FY2006-FY2010.