Close-ups of the Often Feared Portuguese Man-of-War

Written by on October 14, 2013 in Marine Life, Other Marine Life

Daily Summary

Autosub in ambitious Antarctic mission
A team of British scientists will use an unmanned autonomous submarine, Autosub3, to monitor ice loss from the West Antarctic Ice Sheet. In order to determine the cause of the recent rapid ice loss, the researchers will use Autosub3 to map a ridge on the sea floor that appears to play an important role in the exchange of warm and cold water beneath the Pine Island Glacier. Their findings will have implications for future sea level rise.

Portuguese man o' war.

Portuguese man o’ war. Photo credit: Olaf via photopin cc.

Hidden beauty of the portuguese man o’ war
Here’s something you don’t see every day. Photographers Aaron and Anna Ansarov are capturing amazing close-ups of the Portuguese man o’ war. Instead of running (or swimming) away like most people, they pick up live specimens and photograph them on a homemade light table. Read the whole article to learn more about the process and be sure to look at the whole photo gallery!

Mosquitofish Genital Shape Linked to Presence of Predators
When predators are nearby, male Bahamas mosquitofish (Gambusia hubbsi) change mating strategies, opting for more frequent encounters with females instead of the usual elaborate courting rituals. New research reveals that mating strategies aren’t the only thing to change when predators are close. The shape and size of the male fish’s genitalia also changes depending on the presence or absence of predators. When living under the threat of predators, male mosquitofish have evolved better ways to impregnate females that allow them to transfer as much sperm as quickly as possible.

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Copyright © 2013 by Marine Science Today, a publication of Marine Science Today LLC.

About the Author

About the Author: Emily Tripp is the Publisher and Editor of She holds marine science and biology degrees from the University of Miami's Rosenstiel School of Marine and Atmospheric Science and a Master of Advanced Studies degree in Marine Biodiversity and Conservation from Scripps Institution of Oceanography. When she's not writing about marine science, she's probably running around outside or playing with her dog. .


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