Susan then poured the fish into a plastic bag so we could get a good look at it. Afterwards the fish didn't want to leave the bag because it had corners, and corners are safe. I said the fish was trapped in this tide pool, and Susan said this was the fish's territory. She compared the fish to someone who's always complaining about and wishing they could leave their home town, but when you say "The bus leaves at four" they start making excuses for why they can't leave.