“Undoubtedly the source of many a sailor myth. Whom we now call Aquatic Elves (or incorporate into the much looser catchall term, Merfolk) are the descendants of those who chose not to pick a side in the great civil war of their species. Instead opting to flee to otherwise ignored locations. E.L.Fs, being masters of biological engineering, were already well acquainted with techniques to modify their bodies and so took on a form well suited for their current environment.
For these Elves the civil war never really ended. Not out of ignorance due to isolation but because of the divisions still obviously present. The throne stands split between the High Elves and Wood Elves. Not to mention all the Dark Elves plotting revenge in their prison dimension. Best sit tight till everyone sorts this out.”
Aquatic Elves are, of course, probably the most visually distinguishable sub-species. Key take aways: their pseudo-fin hair which strikes a balance between said concepts. Their facial markings obviously reflect their surroundings and for the cranial object: pearls!