When your Poptropican becomes a part Poptropican, part fish, you must learn to survive in the ocean . . . but an evil Fisherman, Thomas McCrustcean wants you to become his prized catch. Can you survive in the ocean until Professor Cousteau (the guy who accidentally turned you into a part Poptropican, part fish) finds a Cure?
- Professor Jack Cousteau
- Thomas McCrustcean
- The Shark
- While you're a fish, if you want to go to a different island, you have to use the Poptropican Buoy (instead of the Poptropican Blimp)