- For some unknown reason, Clam disappeared from the show after Season 1. He possibly made a cameo in the Season 2 episode Bubble-Cadabra! in the pop song "Abra-Cadabra". There was a clam in the song, but it is uncertain whether it was him or not.
- In Season 2, the fish tank that he lives in is empty.
- In Season 3, his fish tank is replaced with a globe.
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