Pic o’ the week – bioluminescent jellyfish

Our ocean pic of the week — a planktonic jellyfish with bright green fluorescent tentacles. The red fluorescence in the middle of the jellyfish is from chlorophyll in a recent meal of algae.

NOAA Ocean Explorer: Islands in the Stream 2002

This pic is from NOAA’s Operation Deep Scope 2005 Expedition – a research cruise in the Gulf of Mexico’s deep waters off Florida.

Some scientists on the expedition set out to study light in the ocean – color, fluorescence, polarization, vision and bioluminescence.

Dr. Edith Widder, a senior scientist on the trip, said her first sight of luminescence in the ocean’s depths changed her life:

“Seeing lights in the ocean – the living lights of bioluminescence observed from a submersible – is the event that set me on my uncommon career path … I was also convinced that bioluminescence had to be one of the most beautiful and important phenomena in the ocean. It seemed like it was everywhere and there was so much of it.”

Image courtesy Dr. Mikhail Matz and NOAA’s Office of Ocean Exploration & Research

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