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They’re an otherworldly sight: blue and iridescent. They have no clear eyes, mouths or body parts analogous to our own.
And rising from one side — is it their back; hard to tell — is a transparent sail, which these little seafarers use to catch the wind.
Sightings of Velella velella, also known as “by-the-wind sailors,” have proliferated along the Bay Area coastline this week, captivating beachgoers and drawing the attention of the climate- and ocean-curious…