; (B) each offshore area of the United States that is leased or under consideration for leasing for offshore energy production; and (C) each offshore area of the United States that is under consideration for maritime transportation. (2) Expanded coverage Not later than 270 days after the date of enactment of this Act, the Under Secretary for Oceans and Atmosphere, to the greatest extent practicable, shall create an environmental sensitivity index product for each area described in paragraph (1) for which the National Oceanic and Atmospheric Administration did not have an environmental sensitivity index product on the day before the date of enactment of this Act. (3) Environmental sensitivity index product defined In this subsection, the term environmental sensitivity index product means a map or similar tool that is utilized to identify sensitive shoreline, coastal or offshore, resources prior to an oil spill event in order to set baseline priorities for protection and plan cleanup strategies, typically including information relating to shoreline type, biological resources, and human use resources. (d) Subsea hydrocarbon review Not later than 120 days after the date of enactment of this Act, the Under Secretary for Oceans and Atmosphere shall conduct a comprehensive review of the current state of the National Oceanic and Atmospheric Administration to monitor, map, and track subsea hydrocarbons, including a review of the effect of subsea hydrocarbons and dispersants at varying concentrations on living marine resources. (e) Initiative on oil spills from aging and abandoned oil infrastructure Not later than 270 days after the date of enactment of this Act, the Under Secretary for Oceans and Atmosphere shall establish an initiative— (1) to determine the significance, response, frequency, size, potential fate, and potential effects, including those on sensitive habitats, of oil spills resulting from aging and abandoned oil infrastructure