Miss Clark is a Mermaid when the drop is raised and explains why she is there until Foy arrives via the mouth of a whale. Foy has some funny effects
The dialogue is not crisp enough to help along the idea.
"A Modern Jonah" by Harry Foy and Ren Sheilds
There is no reason this couldnt be worked into a big hit
Variety, 1:4 (27/1/1906)