A Gallery: Delights & Splendors of Cascadia

Velella is a cosmopolitan genus of free-floating hydrozoans that live on the surface of the open ocean. There is only one known species, Velella velella, in the genus, commonly know as Sailors by the Wind.

Sailors by the Wind live in warm and temperate waters in all the world's oceans. They live at the water/air interface, with the float above the water, and polyps hanging down about a centimetre below. Organisms that live partly in and partly out of the water like this are known as pleuston. Offshore boaters sometimes encounter thousands of V. velella on the water surface.

The small rigid sail projects into the air and catches the wind . However Velella sails always align along the direction of the wind where the sail may act as an aerofoil so that the animals tend to sail downwind at a small angle to the wind. Having no means of locomotion other than its sail, V. velella is at the mercy of prevailing winds for moving around the seas, and are thereby also subject to mass-strandings on beaches throughout the world.

Small, jellyfish-like sea creatures known as by-the-wind sailors—or purple sails—are getting blown onto beaches from California to Washington by the millions.

Swarms of the purple-colored, oval-shaped creatures washed ashore and died in amazing numbers - as seen in this photo I took just north of Newport Oregon last month.

The Weather Channel has reported that billions have washed ashore along the West Coast since March as a result of strong winds and above-average sea surface temperatures.

“Since March, the component of surface wind blowing from west to east over the northeast Pacific toward coastal Washington and northwest Oregon has been stronger than average,” said weather.com meteorologist Jonathan Erdman.

http://cdn.grindtv.com/uploads/2015/04/16541247233_627a8080ba_z.jpg
 
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