Mix Jell-O according to the package and then pour into cups (or a large bowl) and put in the refrigerator to harden.
When the Jello is almost set (not liquid anymore, but still a bit pliable) push a candy fish down into it. You can also do this after the Jello has set, by using a knife to slice a small slit in the Jello and squeeze the fish inside.
Using a food processor, crush the wafers to make “sand” for the beach and then added a layer of “foam” with Cool Whip to separate the ocean and the sand.
Add any extra fish you'd like and serve on a tray coated with extra "sand" for a fun centerpiece!
Notes
If you prefer, you can use canned whipped cream, just be sure to serve it right away!