The ornamental
fish hobby uses 2000 tonnes of coralline annually to build "reef aquaria". Hard corals are listed in Appendix II of CITES and thus their international movement is monitored.
"It is predicted that, over the next two years, some 43,000 cubic
metres of coral rock will have to be mined from existing reefs to meet
the demand for "aggregate" to surface roads in the capital of Male alone".