rockpool shrimp, palaemon elegans, saltwater decapod crustacean, climb on a stone, covered with rich algae vegetation

actinia active adult algae anemones animal antenna aqua aquaculture aquarium aquascape aquatic atlantic background biodiversity biotope black clear climb closeup colorful concept covered crustacean decapod decorative design ecology elegans environment equina exotic fauna fishkeeping free friendly funny green instinct invasion invasive life littoral live macro marine natural nature ocean palaemon red reef rich rockpool saltwater sand sea shrimp space stone tank underwater vegetation water widespread wild zone