New short story out 'The Sea Taketh'
Has a nice little explanation of how Sigendil is view in the realms "Bringing the rubber eyepiece to his eye, he trained it on the twinkling dot of Sigendil. The night sky might vary from realm to realm, and even within a realm, and with the movements of Ulgu-Hyish within the aethyric cloud, but the beacon star of Azyr was a fixed point in every sky."
More mentions Merwynn & Kelpdarr "Almost nothing lived at these depths. He knew of the merwynn and the kelpdarr, fiercely isolationist and protective of their territories, but even they rarely plumbed beyond the sunlit layer."
Also Free city Orruks "a peripatetic community of orruks of a more mercantile bent. They traded in meat and in bone, and in the spoils of their constant warring on the restless lands of Skulldrake and Wither and Deathrattle Point. Most Kharadron authorities would have run the greenskins off long ago, but as long as there were other foes to fight – and Toba Lorchai had plenty – then their belligerence was an even greater boon to the town than their trade goods."