(Thanks to NoCamels.com) Israeli start-up CoreBone has developed a method of performing bone implants (spinal, dental etc.) using corals that are grown in the laboratory rather than harvested from the sea. CoreBone produces high quality corals to encourage bone growth without damaging the ecology.
http://nocamels.com/2013/07/corebone-implants-corals-as-human-bone-replacements/
http://www.youtube.com/watch?v=Y-EmgIsrhVI