a girl exclaims. “I think they’re just mesmerizing,” Jennie Janssen, the assistant curator who oversees the care of the aquarium’s jellyfish, tells me. “They don’t have a brain, ...

Sunlight is plentiful on this remote Pacific island, which is a good thing because golden jellyfish don’t just enjoy basking in the sun—they need its light to survive. Solar rays nourish ...