Robuta

https://bg.copernicus.org/articles/10/2569/2013/ BG - Chemosymbiotic species from the Gulf of Cadiz (NE Atlantic): distribution, life styles and... https://repository.si.edu/items/0b743ade-f196-4a76-b9f8-cd74424d7c98/full Chemosymbiotic bivalves and stable carbon isotopes indicate hydrocarbon seepage at four unusual... carbon isotopes