I don't know if this is my last contribution to this year's Mermay event. I may have time to make one more before the month ends. Nevertheless, here goes.
This fanart requested by "happycookie12345" of DeviantArt features the Wonder Pets in mermaid form.
As usual I never saw the series, but I did read that one episode in their lineup was called "Save the Mermaid". Perhaps this is the mermaid's reward for their saving her?
Anyway, I hope you like this as much as he does.

Characters by Nickelodeon/Viacom