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Updated: Sep 4, 2025

Bioluminescent Bacterial Imaging In Vivo
Published on: November 4, 2012
Boat encounter with the 2019 Java bioluminescent milky sea: Views from on-deck confirm satellite detection
1Department of Atmospheric Science and Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523-1375.
Abstract:
"Milky seas" are massive swaths of uniformly and steadily glowing ocean seen at night. The phenomenon is thought to be caused by luminous bacteria, but details of milky sea composition, structure, cause, and implications in nature remain largely uncertain. Between late July and early September 2019, specialized low-light satellite sensors detected a possible bioluminescent milky sea south of Java, Indonesia, spanning >100,000 km2. Upon learning of these findings, crew members of the yacht Ganesha reached out to confirm and share details of their personal encounter with this same event. Here, we document Ganesha's experience as recalled by the crew, compare their course to satellite data, and assess their photography of this milky sea.
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