[quote=@Willy Vereb]
[@Serpentine88]Can I have a certain population of Mesulids serving Yllendthyr?
They usually take up marine jobs or duties which even explicitly rely on their skills. I imagine Mesulids can teach me a thing or two in regards the use of sonars. And that's just one example, ofc.
Say, it's possible that certain male Mesulids aren't satisfied with their current status in society go on an adventure to live in different countries.
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It is possible, as emigration does happen, though it also means ethnic minority enclaves. As for social outcast Mesulids, that one is interesting. Be warned though, apostates are typically despised back home and publicly (that is, intentionally) appearing to be harbouring them will cause tensions. 

On the note of emigration/immigration, I will need to figure out the minorities of other species inside my empire as well as the demographic makeup of the empires colonies... How many elves would be in the empire...