Kind-of off topic I guess, but we were just visiting an aquarium in Seaside OR a couple weeks ago, and they famously have an octopus in the tank, with no top on

Kind-of off topic I guess, but we were just visiting an aquarium in Seaside OR a couple weeks ago, and they famously have an octopus in the tank, with no top on it that you can stand next to and watch it swim around. While we were there, it was dancing for us, speeding across the tank like I'd never seen. He really looked like he'd love to be free. So the question had to be asked, "What if he wants to get out?" The aquarium attendant told us something in the vein of, if he gets out, he gets out. If he wants to be free, he will get free. I thought that was an interesting answer, though I'm still not sure how I feel about it. I can tell you that if it tried to get free while I was there, I'd probably get the heck out of the aquarium. It resembled an alien, and I'm afraid of most giant things from the sea.