Apparently a certain Wadj-wer, whose name means the "Great Green," might have been a personification of the Mediterranean Sea (the same sea which belonged to and was ruled over by Poseidon, and which, to an extent, Poseidon personified). It is also argued, however, that Wadj-wer rather represented the large lakes and lagoons of the northern Nile Delta region. Water-deities in ancient Egypt are almost invariably associated with the River Nile rather than any other water body, and so the prominence borne by Poseidon would be equivalent to that possessed by a Nile-god.