Cnidaria

Actress Anne Curtis was stung by a deadly box jellyfish while shooting a TV show in the Philippines Wednesday night (April 2).

The cycle may explain why jellyfish seem to be taking over the oceans.

Atlantic turtles can stop and eat, while Pacific turtles have to eat on the go.

They may be squishy and gelatinous, but jellyfish are effective predators, a study says.

Jellyfish actively compete for food by swimming up and down.

Another strange image for you to figure out.

One of multiple sets of eyes allows a box jellyfish to look up and stay safe in its mangrove home.

Simple, successful, and sometimes deadly, jellyfish can wreak havoc when they bloom, or they can inspire with their beauty.

Simple, successful, and sometimes deadly, jellyfish can wreak havoc when they bloom, or they can inspire with their beauty.

Troublesome jellyfish blooms have prompted fears that jellyfish may come to dominate marine ecosystems thanks to humans, however, to some scientists this is premature and unfair.