In the basic map you find three underwater western caves stacked together. The first is the crab cave and below is the angler nest. The third underneath the angler nest however, is where you can find an enemy Mosasaurus and Dunkleosteus. If you have an idea of where it could be then go there but it is too deep and has a maze with Fire jets. Believe me I tried and couldn't believe my eyes! This page isn't finished so i will be updating this constantly. Also i had to put this up to say there is A ENEMY MR.SNAPPY because the page with the Mr.Snappy fossil states it does not.