; (J) developing and maintaining in situ native coral propagation sites; or (K) developing and maintaining ex situ coral propagation nurseries and land-based coral gene banks to— (i) conserve or augment genetic diversity of native coral populations; (ii) support captive breeding of rare coral species; or (iii) enhance resilience of native coral populations to increasing ocean temperatures, ocean acidification, coral bleaching, and coral diseases through selective breeding, conditioning, or other approaches that target genes, gene expression, phenotypic traits, or phenotypic plasticity. (f) Funding requirements (1) Fifty percent match (A) In general Except as provided by subparagraph (C), Federal funds for any coral reef project under this section may not exceed 50 percent of the total cost of the project. For purposes of this paragraph, the non-Federal share of project costs may be provided by in-kind contributions and other noncash support. (B) Waiver The Administrator may waive all or part of the matching requirement under subparagraph (A) with respect to a coral reef project if the Administrator determines that— (i) no reasonable means are available through which the entity that submitted the proposal for the project can meet the matching requirement