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Why are there less sunny days in May and June?
The ocean glows blue at night
Image: Erik Jepsen
In May 2018, ocean waves lit up aqua blue at night. The cause was a red tide, or algal bloom, off the coast of San Diego. The ocean waves agitated dinoflagellates in the water, causing a bioluminescent display at the surface.
According to Scripps, the last bioluminescent phenomena was in 2013 and the observable occurrence can last a few days to an entire month.
Resources:
Scripps Institution of Oceanography
Type
Phenomena
Subject
Life Science
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