Along long stretches of the Texas shoreline, thousands of rare sea creatures have been turning up dead or dying, transforming ...

Hordes of bright blue, jellyfish-like sea creatures are washing up on beaches across California. As of Monday, thousands of the critters — called velella velella or by-the-wind sailors — have been ...

The stinging sea animal has been recently spotted on six beaches between Wales and Cornwall over the course of two weeks. The Portuguese man o' war is not a jellyfish, but rather a cooperative of ...