.. Jalbum 8.5 Spain is actively exploring artificial reef technologies and has used Reef Balls in a unique fishery research project for developing Hackfish habitat in the Atlantic. In the Mediterranean, The City of Barcelona built Reef Balls for a diving attraction. There have been numerous investigations for Reef Balls as breakwaters their and we have an active authorized contractor ASPO. <a href="http://www.reefball.com/map/spain.htm">Click here for World Mapping System Information on Spain</a>