The Caribbean box jellyfish has a bell-shaped body from which four knoblike rhopalia hang, with each rhopalium including some ...

Box jellyfish have four centers of vision—known as rhopalia—and each contains visual neurons and six eyes, for a total of 24 eyes per animal. In an experiment, the team removed the rhopalia ...

In contrast, the box jelly boasts 24 eyes, which are dark brown and grouped into four clusters called rhopalia. Nilsson shows me a model of one in his office: It looks like a golf ball that has ...

Jellyfish then use reflexive movements to right themselves again. Most species of jellyfish don’t have eyes, but instead use light-sensitve cells around their bells called rhopalia. Rhopalia detect ...

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