Comments Subscribe to Personal Liberty News Feed Subscribe to Personal Liberty

Marine Bacteria Glow To Attract Attention

EILAT, Israel, Dec. 29 (UPI) — Bioluminescent bacteria glow in the ocean as a form of “advertising” meant to attract hungry diners, Israeli and German researchers say.

The scientists, writing in the Proceedings of the National Academy of Sciences, report laboratory experiments strengthen a long-held theory that marine bacteria light up to obtain a free ride to other areas of the ocean in the digestive tracts of larger creatures, reported Tuesday.

Numbers of deep-sea species, from bacteria to fish to squid, are bioluminescent, generating light inside their bodies through chemical reactions.

Margarita Zarubin, at the Interuniversity Institute for Marine Sciences in Eilat, Israel, put luminescent bacteria in a tank and watched as smaller animals were attracted to them as a food source, ignoring other bacteria genetically modified to be unable to glow.

When shrimp that were beginning to glow from ingesting the bacteria were presented to predator cardinal fish along with shrimp that were not glowing, the cardinal fish ate only the glowing fish.

When the researchers tested the fish feces they found the bioluminescent bacteria had passed unscathed through the fish guts and come out intact.

The whole process spreads the bacteria through the water faster than they could move on their own, Zarubin said.

UPI - United Press International, Inc.

Since 1907, United Press International (UPI) has been a leading provider of critical information to media outlets, businesses, governments and researchers worldwide.

Facebook Conversations

Join the Discussion:
View Comments to “Marine Bacteria Glow To Attract Attention”

Comment Policy: We encourage an open discussion with a wide range of viewpoints, even extreme ones, but we will not tolerate racism, profanity or slanderous comments toward the author(s) or comment participants. Make your case passionately, but civilly. Please don't stoop to name calling. We use filters for spam protection. If your comment does not appear, it is likely because it violates the above policy or contains links or language typical of spam. We reserve the right to remove comments at our discretion.

Is there news related to personal liberty happening in your area? Contact us at


Sign Up For Personal Liberty Digest™!

PL Badge

Welcome to,
America's #1 Source for Libertarian News!

To join our group of freedom-loving individuals and to get alerts as well as late-breaking conservative news from Personal Liberty Digest™...

Privacy PolicyYou can opt out at any time. We protect your information like a mother hen. We will not sell or rent your email address to anyone for any reason.