; (2) new and ongoing outbreaks of invasive species; (3) new and ongoing coral bleaching events; (4) natural disasters; (5) man-made disasters, including vessel groundings, hazardous spills, or coastal construction accidents; and (6) other exigent circumstances. (c) Best response practices The Administrator shall develop guidance on best practices to respond to coral reef emergencies. Such best practices shall be— (1) based on the best available science and integrated with evolving innovative technologies; and (2) updated not less frequently than once every 5 years. (d) Plan requirements A coral reef emergency plan shall include the following elements: (1) A description of particular threats, and the proposed responses, consistent with the best practices developed under subsection (c). (2) A delineation of roles and responsibilities for executing such plan. (3) Evidence of engagement with interested stakeholder groups, as applicable, in the development of such plan. (4) Any other information the Administrator considers to be necessary for evaluating such plan. 216. Emergency plan certifications (a) Submission to administrator for certification Federal agencies specified in subsection 205(c), covered States, and coral reef stewardship partnerships certified under section 210(e) may submit coral reef emergency plans developed under section 215 to the Administrator for certification. (b) Evaluation (1) In general The Administrator shall— (A) evaluate a plan submitted under subsection (a) to determine whether the plan complies with the requirements of section 215(d)