Alright, so there's a human straddling his back now. Glacius lets out a rattling breath, the sound tapering off into something a little more at ease when he feel's Carlisle's hands at his neck. "No. It's--I mean, it's strange. Different, maybe, is the better word. I've carried my fair share of humans ever since being brought to this cave, just never like this."

Now he gives off a light chuckle, trying to make things feel less awkward with humor, before he begins winding through the water again. It's a little bit more difficult now--having the human's legs wrapped around his body like this inhibits his lateral undulation somewhat, making it hard to effectively use the movement of the waves to propel him. As Carlisle probably knows by now, however, he's not the sort to be deterred--it just means he probably won't be able to swim about for as long before he has to head back to the shore to rest, which probably suits the clergyman just fine. Until that point Glacius coasts them towards the sunset, watching the bright blue sky fade to a dimly glowing golden-orange.