Little, transparent, blue-ish sea creatures are washing up on the shore at beaches in San Diego County. San Diego residents are taking to social media to ask the question: what are they?

The tiny blobs you might have seen during your walk on the beach are a species known as Velella velella. The creatures are also known as "by-the-wind sailors." According to UC San Diego’s Scripps Institution of Oceanography, the creatures float on the ocean surface and are moved across the water by the wind.

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