AcanthocardiaAcanthocardia is a genus of saltwater clams, marine bivalve molluscs in the family Cardiidae. They are infaunal suspension feeders.SpeciesThere are six extant species: Acanthocardia aculeata Acanthocardia deshayesii Acanthocardia echinata Acanthocardia paucicostata Acanthocardia spinosa ''Acanthocardia tuberculata''