Mild winter weather creates ideal conditions for these jelly-like creatures that travel by wind and wash ashore in spring.

Thousands of translucent blue marine organisms, known as by-the-wind sailors (Velella velella), have recently washed ashore along the beaches of Northern California. These sudden mass strandings, ...

Thousands of electric blue, jellyfish-like sea creatures washed up on Central Coast beaches this week. Known by the nickname ...

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 ...