Red Swimming Crab Red swimming crab (Gonioinfradens paucidentata) in a reef ledge at Pentagon Related Posts Postcard from the Reef - Flat Rock Crab Convex Crab Postcard from the Reef - Pebble Crab Postcard from the Reef - Urchin 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