In an atrium of the Mission Inn, there's a fountain.
I sat there and sketched it, and here's one of the creatures that waddled up for a sip early one morning when no one was looking.
Then a saucer descended and dropped off this guy, who was old and twice as huge before he took a sip. By the way, the BT event was covered by the TV show Nightline, so keep an eye out on that program in the next couple of weeks.