Yesterday we were sailing in N15 and there were at least 5 aggressive monstrous whales in the server and all but one were unable to be targeted or damaged. We used a few 100 bolts at close range as well as firearms and weren't able to deal any damage to them. O15 also had 3 and 2 were unable to be targeted or damaged.
We lost two elephants in two days to regular cobras doing much more damage than they should. The rider said that the level one cobra hit him for roughly 100 damage.
Edit: Lost a third elephant dying near instantly to a level one cobra. It's body also disappeared on death.
I was hit by the Steam issues yesterday and still can't connect to any Atlas server "Host Pending Connection Timeout".