; (B) a vessel collision that severely negatively impacts a coral reef ecosystem; (C) an unforeseen or disaster-related circumstance that negatively impacts a coral reef ecosystem, including as a result of human activities; (D) a harmful algal bloom or invasive or nuisance species outbreak that negatively impacts a coral reef ecosystem; or (E) the presence of an unexploded ordnance or similar underwater munitions that harms a coral reef ecosystem. (2) Coral disease outbreak or coral bleaching event The term coral disease outbreak or coral bleaching event means the occurrence of a coral disease outbreak or coral bleaching as a result of a natural, anthropogenic, or undetermined cause. . 106. Revisions to national program Section 207 of the Coral Reef Conservation Act of 2000 ( 16 U.S.C. 6406 ) is amended— (1) in subsection (b)— (A) by amending paragraph (2) to read as follows: (2) enhancing public awareness, education, understanding, and appreciation of coral reefs and coral reef ecosystems, including the benefits healthy and resilient coral reefs provide to island and coastal communities and to the United States; ; (B) by amending paragraph (3) to read as follows: (3) removing or otherwise addressing, and providing assistance to States in removing or otherwise addressing, derelict fishing gear, marine debris, and abandoned vessels from coral reef ecosystems to conserve living marine resources; ; (C) by amending paragraph (4) to read as follows: (4) cooperative conservation, research, restoration, and management of coral reefs and coral reef ecosystems with local, regional, or international programs and partners, including research institutions located in a State; ; and (D) by adding at the end the following: (5) improving and promoting the resilience of corals, coral reefs, and coral reef ecosystems; (6) activities designed to prevent or minimize the likelihood of vessel impacts or other physical damage to coral reefs, including any at-risk reefs identified under section 207(d)