Scientists still have much left to learn about the creatures, even as hundreds of thousands of them wash ashore.

The creatures can be harmful to dogs who eat them while on the beach, potentially causing vomiting, diarrhea and other gastrointestinal issues.

This year, they’ve been spotted along the coasts of Washington and Oregon, although a majority of sightings so far have been ...

The jellyfish-type creatures travel the ocean via clear "sails." ...

Explore the ocean's most stunning sea creatures, from graceful sea dragons to colourful fish, and uncover the beauty hidden ...

The jellyfish-like creatures can pose a danger to dogs.

Blue, jellyfish-like creatures called velella velella are washing ashore California beaches. Here's what to know.

“These mysterious and beautiful creatures rely on warm ocean currents to ‘sail’ them around the world,” The Wildlife Trusts says. Enormous volumes of these mysterious blue colonial organisms, like ...