Today, we took a walk out back by our pond. The pump sounded funny, and there wasn't much water going over the rock into the pond. Hubby decided to investigate. It had been awhile since the pre-filter basket had been cleaned out, and with the leaves and tree gunk, it couldn't hurt to empty it. He opened it up, and guess what he found??? This big guy, and a little friend, (both very much alive and well) inside the basket, clogging up the flow. How he fit underneath the cover, and then into the pipe that leads to the trap, we haven't yet figured out. He's way bigger than anything else that has ever gone through. I'm just glad he didn't get stuck halfway!