Postcard from the Reef – Moorish A moorish idol (Zanclus cornutus) in a cave at 30ft depth, Holoholokai Related Posts Postcard from the Reef - Idol Postcard from the Reef - Guard Crab Share this:TweetWhatsAppEmail Author: Andrew An electrical engineer, amateur astronomer, and diver, living and working on the island of Hawaiʻi. View all posts by Andrew