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Catalan Opisthobranchs Research Group

GROC is a non-lucrative organisation focused on the study and awareness of opisthobranch molluscs and the conservations of their habitats.

The association is open to all individuals, organizations and companies interested in collaborating with their targets.


Latest News

Una primavera de primaras citas


Empieza la primavera, la mejor época para los nudibranquios, y como no podía ser de otra manera, empezamos con las primeras citas registradas este año

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Resurrecting Tylodina rafinesquii in the Mediterranean and Eastern Atlantic


These last few days, a study carried out by the GROC scientific committee composed of Juan Moles, Robert Fernández and Xavi Salvador has been published in the Journal of Molluscan Studies. This study assesses the status of the genus Tylodina in the Mediterranean Sea and the eastern Atlantic and resurrects the species Tylodina rafinesquii described nearly 200 years ago.

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