*Corresponding autor: edlinguerra@gmail.com This database contains information on the abundance of benthic sessile fauna associated with ARMS from the research “Evaluation of the use of Autonomous Reef Monitoring Structures (ARMS) to estimate cryptic diversity in two coral reefs of the Yucatan Península, México” using the point intersection method (400 points per plate on each side) with the CPCe v4.1 soft-ware (Coral Point Count with Excel extension v4.1) to analyze Krebs, C.J. Estimating Density: Quadrats Counts. In Ecological Methodology; Addison-Wesley Educational Publishers, Inc., 1999; p. 69 ISBN 0321021738 Kohler, K.; Gill, S. Coral Point Count with Excel extensions (CPCe): A Visual Basic program for the determination of coral and substrate coverage using random point count methodology. Comput. Geosci. 2006, 32, 1259–1269 CC-BY-NC-N