This jellyfish species has a clear body, can glow green and has an almost unnoticeable sting, Jace Tunnell writes.

The infamous box jellyfish developed its frighteningly powerful venom to instantly stun or kill prey, like fish and shrimp, so their struggle to escape wouldn’t damage its delicate tentacles.

Jiggly, colorful, and vaguely transparent, jellyfish are a fan favorite at any aquarium - not to mention they make a fantastic screensaver. The invertebrate is so popular, there's an entire day ...