Appears that after the patch underwater mobs are spawning much higher than they used to. Example is a neriad huntress which is the PH for Morwenna Undertow until now has spawn near the sea floor (static, non pathing mob). They're now spawning about half way up in the water. Only PH that isn't spawning weirdly like this is the one in the center on the rock.
Its probably related to the sharks flying over land fix, mobs were probably not acting correctly in zone, so now they are.
Tough to say. During beta these mobs were in the same loc they've been in on live since release day. They were mostly spawned near the sea floor. They all seem to have floated up now many half way or more to the surface. Not a huge problem but it is different /shrug
Thinking the reason they were getting stuck above ground is the reason they were positioned like that before, so now that whatever is fixed, they wont get stuck above ground and they are also positioned better at their spawn point in water.