An oval shaped blue soft thumb sized jellyfish with round concentric circles on top.

What Are Those Blue Blobs Washing Up On SoCal Beaches?

By Karissa Duran, Scripps Institute of OceanographyMay 19, 2023 What are these blue jellyfish-like creatures? These creatures are called Velella velella. They have several different nicknames including “by-the-wind-sailors” and “little sails” as a reference to their sail-like, chitinous structure that sticks up above the water.     Why are they washing up? They wash up on shore due to a combination of shoreward wind and current patterns. … Continue reading What Are Those Blue Blobs Washing Up On SoCal Beaches?