How can anything as delicate as a jellyfish also be so dangerous? They are floating underwater enigmas: Hundreds of tentacles, but only one orifice for nutrition, propulsion, procreation, and waste management.

Jellyfish are clear as glass when you shine a light through them, but every color in the world in the darkness of the deep. Some are as small as 5 mm, while others are as large as 8 feet (7.2 m). Some varieties can swim as fast as 5 mph (8 km⁄h). Others glow in the dark. The speed and force with which a jelly delivers its sting is comparable to that of a bullet fired from a gun. Not bad for an organism that often doesn’t even have eyes. Our hat version is fairly simple, too: a softly shaped beret worked from the decorative edging up to a series of spiraling open decreases, and finished with all the important jellyfish parts. Just remember to keep your tentacles to yourself.