Streptococcosis is an infectious bacterial disease of both homeotherms and poikilotherms. Among the Streptococcus species that infect marine animals, Streptococcus agalactiae has the broadest host spectrum, including different aquatic organisms in freshwater and marine environments. The common dolphin ( Delphinus delphis ) is categorized as Endangered in the Mediterranean Sea. There are few reports of a streptococcal infection...