I think the items are lobster, anchor, lizard, oar, dragonfly, message in bottle, clam, unidentified, frog and coins/doubloons. I have received a hammer from collecting an otter. Getting close to completing the second collection! Guess I wasn't as close as I thought. Now have 6 lizards, 7 message in a bottle, 3 clams, 8 frogs, 2 coins and 1 of everything else except the oar.