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.

When I touched the sack of cod roe for the first time it felt exactly like my thighs It was light pink and so soft Maybe my whole world is made of squishy fish eggs ...

The small, robotic fish mimics the look and movement of a real fish, allowing it to get close to marine life. Controlled wirelessly via remote, it can take high-res photos and videos with its ...