palaemon elegans, saltwater rockpool shrimp inspect with pereiopods or legs sand bottom of littoral zone in black sea

active adult animal antenna aqua aquaculture aquarium aquascape aquatic atlantic background biodiversity biotope black bottom clear closeup colorful concept crustacean decapod decorative design elegans environment exotic fauna fishkeeping food free friendly funny inspect instinct invasion invasive legs life littoral live macro marine natural nature ocean ornamental palaemon pereiopods reef rockpool saltwater sand sea searching shrimp space substrate tank underwater water widespread wild zone