One Panel #870: Batman vs. Shark

From "Adventure of the Vitamin Vandals" by Ted Udall and Howard Purcell, Batman #17 (July 1943)

It was already a well-worn trope at the time that hero adventurers would eventually find themselves facing a shark with nothing but a short-bladed knife. Here, Batman does it. I swear, the oceans of the 20th Century are gagging on shark corpses. Sad. #TeamShark