The European edible sea urchin, Echinus esculentus, is listed as endangered by the IUCN. Isostichopus fuscus, a holothurian, is listed by CITES. It occurs on the coasts of Ecuador, Galapagos, Mexico and Peru.
- UNEP-WCMC, 2005. "Isostichopus fuscus" (On-line). UNEP-WCMC Species Database: CITES-Listed Species. Accessed January 21, 2005 at http://www.cites.org/eng/resources/species.html.
- World Conservation Monitoring Centre, 2004. "Echinus esculentus" (On-line). 2004 IUCN Red List of Threatened Species. Accessed January 21, 2005 at http://www.iucnredlist.org/search/details.php?species=7011.