PACIFICA (CBS SF) -- The beaches in Pacifica were glimmering blue after thousands of jellyfish-like creatures washed up on shore earlier last week.
The creatures known as Vellela vellela are a close relative of the jellyfish, but don't sting.
They have a small sail that peoples them over the surface of the ocean, earning them the nickname 'By the Wind Sailor.'
When winds shift onshore, the creatures blow up onto beaches.
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