One of the biggest mysteries of evolution is how species first developed complex vision. Jellyfish are helping scientists solve this puzzle, as the group has independently evolved eyes at least nine ...

Box jellyfish are often feared as dangerous animals, with some species capable of causing severe or even fatal stings.

The deadliest sea creature doesn’t have rows of teeth or crushing jaws. It’s a near-invisible ghost, with a glassy body and whisper-thin tentacles. Look too quickly, and you might miss any given ...

For three summers in a row, researchers working in the Mai Po Nature Reserve noticed something unusual drifting through the brackish shrimp ponds. At first glance, the small, translucent animal looked ...