gammarus sp., is an amphipod crustacean genus in the family gammaridae

gammaridae gammarus animal aquatic arthropoda arthropods biological black sea cancer crawfish crayfish crustacea crustacean crustaceans ecological ecology environment europe fauna invertebrate isolated landscape macro malacostraca marine nature organisms plankton reptantia research saltwater seaside shrimp undersea underwater footage shot water world wild wildlife zooplankton