Sherman's Lagoon question

I’m embarassed that I’m asking something this trivial.

In the comic strip Sherman’s Lagoon, I know that Sherman lost his fins in a storyline a few weeks ago. But I see he now has his fins back. How were they restored?

He bought them back from an online seller and the teenage fish (can’t remember his name) sewed them back on for him.

Edit: Found the beginning of the recovery storyline. Just keep going forward from there.

The little nerdy fish, whose name I don’t remember, bought them back from an (apparently real) online dealer, and surgically reattached them.

ETA: Dadgummit, jayjay!