You might have noticed blue jelly-like creatures washing up on shore in Huntington Beach and the South Bay. Well, here's what they found out about them.
Velella is in the same phylum as anemones, corals, jellyfish and hydroids. It was once thought to be a colony of animals similar to the infamous Portuguese Man-of-War, but careful research has shown that it is a complicated individual rather than an assemblage of animals.
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Source: https://baynature.org/article/wind-sailors-seasonal-vellela-beachings/