1. The light on the deep-sea fish's head that lures in Marlin and Dory.
2. The whale's giant mouth, which easily gulped up millions of krill.
3. The sharks of the "Vegetarian Shark Club", which used their winning charm to lure Marlin and Dory into a false sense of security, so Bruce could suddenly attack them without suspicion.
Hope this helps. I love Finding Nemo....