@Trinais Looks good so far. i've a couple of points. The Sea-folk are colonist from another continent, right? That is pefectly fine. Could you add that to the race/population description? 

Could you eleborate a bit more on the dynamics between the human polulation and the sea-folk? Are the sea-folk like the upper class and hold the most political and economic power while the humans are more of an underclass that have less to say in political affairs? 

Once the above is made a bit more clear then the nation is accepted. If you can't find a picture for your flag a description will work as well.