Some people found a lootable egg that gives the pet that was only available for an iCoke Promotion in Taiwan.
Co-ords 56, 88 in Borean Tundra @ Riplash Ruins.
When you swim down next to the wall there a kind of crack in the wall (not ALL the way down just under the water - I made that mistake and swum around for ages)
There is some seaweed, swim straight towards the crack. You will end up in a very small cave tunnel.
Keep following it swimming up and it comes out at the tunnel.
Go along and there in this tiny cave is an egg on the table.
Ignore that.
Go the nest behind it.
Lootable egg = free pet!
As a suggestion if you are on a PvP server take a stealth class. Currently in the cave in my cross-realm PvP zone there is 20 Alliance camping on top of the egg killing people who try to loot it.
I also didn't manage to get some snaps because there was Alliance everywhere and I wanted to get in and out ASAP.
It's not hard to miss, there's some seaweed and a weird round sea plant of some sort outside the opening.