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slideshow
The Ocean Throughout Geologic Time, An Image Gallery
Evidence shows that life probably began in the ocean at least 3.5 billion years...
Tue, 09/20/2011 - 15:30
slideshow
Zooxanthellae and Coral Bleaching
Tiny plant-like organisms called zooxanthellae live in the tissues of many animals,...
Thu, 12/03/2009 - 12:14
slideshow
The Ocean Under the Microscope: Images from Nikon Small World
The ocean is so big that it can be easy to forget the microscopic beauty of the...
Wed, 04/30/2014 - 10:34
slideshow
The Hyper Eyes of Hyperiids: How Some Shrimp-Like Creatures See Light in the Deep Sea
Hyperiid amphipods are small crustaceans related to sand fleas and distantly...
Tue, 08/19/2014 - 10:47
slideshow
Under Arctic Ice
Hidden beneath Arctic ice is a world few have ever seen. Take the icy plunge with a...
Tue, 01/04/2011 - 14:48
slideshow
Mangroves: Photos of Plants and Animals
Mangrove is the name for a tree—and also for a complex ecosystem—that bridges...
Mon, 09/29/2014 - 11:48
slideshow
Foraminifera
Microscopic, single-celled organisms called foraminifera have a fossil record that...
Thu, 03/25/2010 - 16:23
slideshow
Migratory Seabirds: A Slideshow
All seabirds spend a significant part of their lives at sea, and many experience...
Mon, 08/12/2013 - 11:41
slideshow
A World Adrift: Life in the Sargassum Slideshow
Smithsonian Marine Science Network Postdoctoral Fellow, Seabird McKeon, returns...
Fri, 05/18/2012 - 16:43