Updates offshore pipeline safety and decommissioning rules and requires studies on environmental impacts. It directs the Interior Department’s offshore safety agency to issue final pipeline safety rules within 18 months that mandate regular third‑party inspections and continuous volumetric leak detection, requires removal or securing of exposed pipeline segments, orders studies and monitoring on leaving pipelines in place vs removal and on chemicals used in offshore operations, and conditions the law’s effectiveness on a required review for harm to reef fish habitat.