"That's basically what I said," Crowley mutters¹. "Also, even if the ocean is fake, you never know. Our hosts might wake up one day and decide that what we actually need is an iceberg situation and suddenly, Sagramore and Laertes end up clinging to a door in the ocean²-- Best not to give them any ideas."

¹It is not.
²But they would just. Y'know. Both get on it.