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Velella Velella Everywhere, Including in the Bay

Rod Witel was sailing on the Bay recently when he was witness to an extraordinary display of nature.

“Sailing the central Bay last week, I literally ran into thousands of Velella velella floating in a swath approximately 1000 yards long. These three- to four-inch jellyfish-like creatures are also called ‘by-the-wind sailors.’ They rely on ocean currents and the wind to ‘sail’ themselves around.”

According to Wikipedia, Velella velella are related the Portuguese man o’ war. They do not sting, but it is advisable to wash your hands after handling them due to the toxins they carry.
© 2025 Rod Witel

Velella are not true jellyfish but are related to jellyfish, sea anemones, corals, and hydroids. I’ve seen them along the California coast but never such numbers in the Bay.”

Velella velella have also been washing up en masse along the California coastline.
© 2025 Rod Witel
A perspective of their size.
© 2025 Rod Witel

Rod is a Club Nautique sailing instructor and charter captain. He recently sent us photos and stories of a flotilla charter in Croatia, and a second charter with friends in Sweden. Read here.

 

4 Comments

  1. Harper Hatheway 4 days ago

    Great story. These guys drift onto our beach in Coronado once a year or so. Beautiful simple sailors like us.

  2. Wren 3 days ago

    A marine murmuration. Thank you for posting great pics and story. We saw it but didnt know what it was..

  3. Linda Newland 3 days ago

    First saw them in a sea of blue upon blue somewhere between SF and Hawaii Beautiful and unique.

  4. Douglas Pelton 3 days ago

    the first time i saw them was two years ago in Spring on the beach at Padre Island, TX. really enjoyed them

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