Image by J. E. Maragos. Foreground: M. capitata; above: M. dilatata; above, lower left: invasive algae (Kappaphycus/Eucheuma spp.) 2 Executive summary Montipora dilatata is considered to be one of the rarest corals known. Thought to be endemic to Hawaii, only a few colonies have ever been found despite extensive surveys. Endangered species status would have major conservation implications; howe...