Aknowledgments

The park director Francisco Ursua Guerrero and Mr. Miguel Ángel García, manager for the survey of artificial reef sites for their kindly support and for all the informations about the C-58 artificial reef project.

The photos of the C-58 sinking were kindly offered by Dr. Miguel A. García, Manager for the survey on artificial reefs of Mexico National Park “Costa Occidental de Isla Mujeres, Punta Cancún e Punta Nizuc”.