As summer approaches, the jellyfish-like Velella velella have been spotted in large numbers along California beaches, particularly in Marin County. These unique marine organisms wash ashore due to favorable wind patterns caused by recent storms. Reports indicate sightings along various beaches, including Stinson Beach and Ocean Beach. Though they resemble jellyfish, Velella velella are more closely related to the Portuguese man-of-war and are commonly found during the spring and early summer as they are propelled by ocean winds. Their presence is also linked to warmer water conditions and seasonal upwelling.
"This time of year the ocean along the west coast transitions into upwelling season. The true start/end of that season shifts every year based on a wide set of variables."
"Velella velella, also known as by-the-wind sailors, are offshore animals that occasionally wash up along beaches during spring and early summer."
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