The ocean holds many bizarre deep-sea monsters. As you dive 140 meters underwater, you might see a megamouth shark. Sure, they look scary, but those 50 rows of teeth are for filtering krill.

From the fearsome piranha and vampire fish to the mighty anaconda, the crocodile, and the candiru, these are among the most terrifying reptiles, insects, spiders, and fish.

Deep sea creatures like the anglerfish look terrifying. Turns out, there’s a reason for that. National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is ...