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.

Sitting on the seafloor, waving colorful tentacles, they lure fish, sting them, and eat them. Scary, squishy, cool, brainless, mesmerizing—jellyfish are all of these and a whole lot more.

North Carolina fishermen catch, release giant great white shark in scary video (Sean Luke and The Sea/Facebook) Recalling the incident, fisherman Luke Beard told Fox 19, “I set hook on the fish ...