Velella velella blown ashore by prevailing winds, Fort Stevens State Park, April 2015 (photo by Tiffany Boothe, Seaside Aquarium)

Striking blue sea creatures, Velella velella, have washed up by the thousands on Oregon beaches including at Seaside, Manzanita, Astoria and Rockaway Beach in recent days, tourism officials report.

The small jellyfish-like animals normally live out at sea, floating on its surface. But every spring, thousands get blown by strong westerly winds onto the sands of Oregon, California and Washington and die, said Bill Hanshumaker, a senior instructor at the Hatfield Marine Science Center and chief scientist for Oregon Sea Grant.

When strong westerly winds blow over the Pacific coastline, Velella velella are swept by the thousands onto beaches including those at Seaside and Manzanita. They are often called By-the-wind Sailors, because they have their own small sails and move with the wind.

Velella velella (vuh-lell-uh vuh-lell-uh) can be beautiful to look at but start to give off a fishy smell as they decay. They don’t sting people who touch them, but experts at Oregon State University advise against walking barefoot through a pile of them because they contain a mild neurotoxin.

Learn more

• Read the original article in The Oregonian
• Download our free Velella velella fact sheet