Even without a central brain, jellyfish can learn from past experiences like humans, mice, and flies, scientists report for the first time. They trained Caribbean box jellyfish (Tripedalia cystophora) ...

For Caribbean box jellyfish, learning is literally a no-brainer. In a new experiment, these animals learned to spot and avoid obstacles despite having no central brain, researchers report September 22 ...

Even though they lack fins and their bodies are gelatinous, jellyfish are some of the most energy-efficient swimmers. They achieve this by making use of their bells – the umbrella-shaped part of a ...