Costa Rica has 11 Regional Conservation Areas (RCAs): more information can be found at www.sinac.go.cr [1].
Links:
[1] http://www.sinac.go.cr
[2] http://www.moon.com/destinations/costa-rica/the-caribbean-coast/highway-32-puerto-limon/siquirres
[3] http://www.moon.com/destinations/costa-rica/the-caribbean-coast/cahuita-and-vicinity/cahuita-national-park
[4] http://www.moon.com/destinations/costa-rica/the-caribbean-coast/manzanillo-and-vicinity/gandoca-manzanillo-national-wildlife-refuge
[5] http://www.moon.com/destinations/costa-rica/the-caribbean-coast/south-puerto-limon/valle-del-rio-estrella/hitoy-cerere-biological-reserve
[6] http://www.moon.com/destinations/costa-rica/south-central-costa-rica/chirripo-and-vicinity/chirripo-national-park
[7] http://www.moon.com/destinations/costa-rica/south-central-costa-rica/la-amistad-friendship-park
[8] http://www.moon.com/destinations/costa-rica/central-highlands/cartago-and-vicinity/san-gerardo-de-dota
[9] http://www.moon.com/destinations/costa-rica/central-highlands/cartago-and-vicinity/tapanti-macizo-de-la-muerte-national-park
[10] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/monteverde-and-santa-elena/sights/monteverde-cloud-forest-biological-reserv
[11] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/monteverde-and-santa-elena/sights/children-s-eternal-cloud-forest
[12] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/monteverde-and-santa-elena/sights/santa-elena-cloud-forest-reserve
[13] http://www.moon.com/destinations/costa-rica/the-northern-zone/arenal-volcano-and-vicinity/arenal-volcano-national-park
[14] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/highway-2-santa-cruz/santa-cruz
[15] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/canas-and-vicinity/miravalles-volcano
[16] http://www.moon.com/destinations/costa-rica/the-northern-zone/highway-4-upala/tenorio-volcano-national-park
[17] http://www.moon.com/destinations/costa-rica/central-highlands/northeast-san-jose/braulio-carrillo-national-park
[18] http://www.moon.com/destinations/costa-rica/central-highlands/turrialba-and-vicinity/guayabo-national-monument
[19] http://www.moon.com/destinations/costa-rica/central-highlands/cartago-and-vicinity/irazu-volcano-national-park
[20] http://www.moon.com/destinations/costa-rica/central-highlands/alajuela-and-vicinity/poas-volcano-national-park
[21] http://www.moon.com/destinations/costa-rica/central-highlands/turrialba-and-vicinity/turrialba-volcano-national-park
[22] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/the-far-north/guanacaste-national-park
[23] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/liberia-and-vicinity/rincon-de-la-vieja-national-park
[24] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/the-far-north/santa-rosa-national-park
[25] http://www.moon.com/destinations/costa-rica/golfo-dulce-and-the-osa-peninsula/the-burica-peninsula/cocos-island-national-park
[26] http://www.moon.com/destinations/costa-rica/the-northern-zone/los-chiles-and-vicinity/cano-negro-wildlife-refuge
[27] http://www.moon.com/destinations/costa-rica/the-northern-zone/puerto-viejo-de-sarapiqui-and-vicinity/frontier-biological-corridor-wildlife-refuge
[28] http://www.moon.com/destinations/costa-rica/central-highlands/grecia-zarcero/bajos-del-toro
[29] http://www.moon.com/destinations/costa-rica/golfo-dulce-and-the-osa-peninsula/the-osa-peninsula/cano-island-biological-reserve
[30] http://www.moon.com/destinations/costa-rica/golfo-dulce-and-the-osa-peninsula/the-osa-peninsula/corcovado-national-park
[31] http://www.moon.com/destinations/costa-rica/central-pacific/costa-ballena/marino-ballena-national-park
[32] http://www.moon.com/destinations/costa-rica/golfo-dulce-and-the-osa-peninsula/golfito-and-golfo-dulce/piedras-blancas-national-park
[33] http://www.moon.com/destinations/costa-rica/golfo-dulce-and-the-osa-peninsula/valle-de-diquis/sierpe
[34] http://www.moon.com/destinations/costa-rica/central-pacific/orotina-playa-herradura/carara-national-park
[35] http://www.moon.com/destinations/costa-rica/central-highlands/escazu-and-vicinity/santa-ana-ciudad-colon/reserva-forestal-el-rodeo
[36] http://www.moon.com/destinations/costa-rica/central-pacific/quepos-and-manuel-antonio/manuel-antonio-national-park
[37] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/highway-2-santa-cruz/barra-honda-national-park
[38] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/southern-nicoya/cabo-blanco-absolute-wildlife-reserve
[39] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/playa-camaronal-manzanillo/playa-camaronal-punta-bejuco
[40] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/southeast-nicoya/curu-national-wildlife-refuge
[41] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/tamarindo-and-vicinity/marino-las-baulas-national-park
[42] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/southern-nicoya/montezuma
[43] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/playa-lagarto-ostional/ostional-national-wildlife-refuge
[44] http://www.moon.com/destinations/costa-rica/guanacaste-and-the-northwest/canas-and-vicinity/palo-verde-national-park
[45] http://www.moon.com/destinations/costa-rica/the-nicoya-peninsula/tamarindo-and-vicinity/tamarindo
[46] http://www.moon.com/destinations/costa-rica/the-caribbean-coast/tortuguero-and-barra-del-colorado/barra-del-colorado-national-wildlife-refuge
[47] http://www.moon.com/destinations/costa-rica/the-caribbean-coast/tortuguero-and-barra-del-colorado/tortuguero-national-park