Um...
There's a mollusk, see, and he walks up to a sea-well he doesn't walk up, he, swims up-well actually the mollusk isn't moving. He's, in, one place, and the sea cucumber? Well they...
...I'm mixed up. There was a mollusk and a sea cucumber. None of them were walking, so forget that I said-
SHELDON! GET OUT OF MR. JOHANSON'S YARD, NOW!