'''''Echinometra viridis''''', '''landak karang''', adalah spesies bulu babi dalam keluarga Echinometridae. Ini ditemukan di terumbu karang di bagian yang sangat dangkal di [[Samudra Atlantik]] barat dan [[Laut Karibia]].<ref name=Colin>{{cite book |title=Marine Invertebrates and Plants of the Living Reef |last=Colin |first=Patrick L. |year=1978 |publisher=T.F.H. Publications |isbn=0-86622-875-6 |pages=[https://archive.org/details/marineinvertebra00patr_0/page/422 422–423] |url-access=registration |url=https://archive.org/details/marineinvertebra00patr_0/page/422 }}</ref><ref name=Dorit>{{cite book |title=Zoology |url=https://archive.org/details/zoology0000dori |url-access=registration |last=Dorit |first=R. L. |author2=Walker, W. F. |author3=Barnes, R. D. |year=1991 |publisher=Saunders College Publishing |isbn=0-03-030504-7 |page=[https://archive.org/details/zoology0000dori/page/788 788] }}</ref> It is not believed to bore holes, but its grazing still causes [[bioerosion]] in reefs.<ref>{{cite book |title=Current Developments in Bioerosion |last=Wisshak |first=Max |author2=Leif Tapanila |year=2008 |publisher=Springer |isbn=978-3540775973 |page=281 |url=https://books.google.com/books?id=6Zy6xC4rB3oC&dq=%22Echinometra+viridis%22+boring&pg=PA281 }}</ref><ref>{{cite web |url=http://biogeodb.stri.si.edu/biodiversity/species/8576/ |title=''Echinometra viridis'' A. Agassiz, 1863 |publisher=Smithsonian Tropical Research Institute |accessdate=2012-09-19}}</ref><ref>{{cite web |url=http://oceanacidification.wordpress.com/2012/09/12/echinometra-viridis-exhibits-seasonal-response-in-calcification-rates-to-predicted-end-of-21st-century-co2-induced-ocean-acidification/ |title=''Echinometra viridis'' exhibits seasonal response in calcification rates to predicted end of 21st century CO2-induced ocean acidification |author=Courtney, T. |author2=Westfield I. |author3=Ries J. B. |name-list-style=amp|date=2012 |work=Ocean acidification |publisher=EPOCA |accessdate=2012-09-19}}</ref><ref>{{cite journal |author=McClanahan, T. R. |year=1999 |title=Predation and the Control of the Sea Urchin Echinometra viridis and Fleshy Algae in the Patch Reefs of Glovers Reef, Belize |journal=Ecosystems |volume=2 |issue=6 |pages=511–523 |doi=10.1007/s100219900099 |s2cid=29599471 }}</ref>
