According to Wikipedia:

The Reef Ball Foundation, Inc. is a 501(c)(3) publicly supported non-profit organization that functions as an international environmental Non-governmental organization. The foundation uses Reef Ball artificial reef technology, combined with coral propagation, transplant technology, public education and community training to build, restore and protect coral reefs. The foundation has already established “Reef Ball reefs” in over 59 countries, and ongoing projects take the total countries reached to more than 70. Well over 550,000 Reef Balls have been deployed in more than 4,000 projects.

Reef Balls’ uses include “coral reef rehabilitation, fishery enhancement, snorkeling and diving trails, beach erosion protection, surfing enhancement, fish spawning sites, planters for mangrove replanting, enhancement of lobster fisheries, creation of oyster reefs, estuary rehabilitation, and even exotic uses such as deep water Oculina coral replanting.”

In 2002, Todd Barbar (founder of Reef Balls) gave a presentation in #reefs irc chatroom about his organization.  It’s great to see Reef Balls’ success over the past decade!

For photos of maturing Reef Balls, check out Reef Ball’s monitoring gallery.

source: http://www.brudirect.com/index.php/The-Daily-Express/200-reef-balls-to-restore-corals.html