Well, I live right next to the Baltic ocean, that (so they tell me ) is the largest brackish pool in the world.
A major denominator to the biotope is that it is covered with ice about 4 months each year...
In this biotope both flora and fauna is very ascetic. Not many species are acclimated to brackish, let alone the freezing conditions.
But there's a couple of lifeforms that interest me to no end.
More later.
Meanwhile, funny how grooming
Samolus resulted in a nice blooming season of the remaining plants: