Diadema sp. is long-spined urchin and Trypneustes sp. is short-spined urchin.Trypneustes sp. on right has attached coral pieces and urchin shell. Possiblyprotection or camouflage.
12/19/2018 8:39:22 AM
Photographer: Dr. James P. McVey
Affiliation: NOAA Sea Grant Program
Date: Jun-67
Location: Hawaii, Between South Point and Kealakakua Bay
Subject: Coral Reefs
Subject: Invertebrates