Palaemon elegans
It is native to the eastern North Atlantic ( including Macaronesia ) , the Baltic , the Mediterranean and the Black Sea , and introduced in the Caspian and Aral seas . 
<triplet> North Atlantic <subj> Baltic <obj> has part <subj> Mediterranean <obj> has part <subj> Black Sea <obj> has part <triplet> Macaronesia <subj> North Atlantic <obj> located on terrain feature <triplet> Baltic <subj> North Atlantic <obj> part of <triplet> Black Sea <subj> North Atlantic <obj> part of