More Human impacts

Tom Peschak, a photojournalist with the Save Our Seas Foundation, describes the devastating effects shark nets have on ocean life along the South African coastline. The nets were installed to protect...
In 1872, the United States did something remarkable. We set aside one of our greatest natural treasures, Yellowstone National Park , for future generations to enjoy and appreciate. The logic was...
The International Union for the Conservation of Nature ( IUCN ) maintains the Red List of Threatened Species , an inventory of the global conservation status of plants and animals. In a 2010 study ,...
A polar bear ( Ursus maritimus) in Churchill Wildlife Management Area in Manitoba, Canada smelling the scent of humans while waiting for sea ice to form on of the Hudson Bay. There are several human...
Two events made me passionate about deep-sea corals . One was my first submarine dive in a deep-sea coral bed off the Hawaiian island of Oahu. There was an incredibly lush community of corals and...
There are many plastic nets floating in the world's ocean. Some of them were lost at sea by fishers; others were discarded overboard when they ripped or became tangled. Regardless, once they are...
Today, carbon dioxide (CO2) levels in our atmosphere are the highest they've been in 15 million years. It's the cumulative impact of an ever-expanding population -- 7 billion people and rising -- and...
Sea ice is typically viewed as the domain of physical and natural scientists, the oceanographers, marine biologists, climate modelers, and navigators of the world. It is easy to forget another...
Happy (early) Independence Day! For many of us in the United States, the 4th of July is a time to celebrate and reflect on our national heritage. In many ways, the U.S. grew up on the water and...
In the ocean, microscopic forms of algae, known as dinoflagellates , can "bloom" into dense patches near the surface, often referred to as "red tides." Some of these harmful algal blooms (HABs) are...
Recorded on Feb. 15, 2011, award-winning ocean filmmaker Jean-Michel Cousteau addresses students and educators at the Third Student Summit on the Ocean and Coasts . Cousteau, president of the Ocean...
Red coral necklaces fill a store display window. The United States annually imports around one million live coral animals from tropical reefs for use in aquariums, and is the largest documented...
Around 100 million years ago, grass from land adapted to live and reproduce while submerged in seawater—the modern-day seagrasses. This sea invasion by land plants happened four separate times,...
Overfishing and sedimentation have heavily impacted this reef off the western coast of Guam. More about coral reef ecosystems can be found in our Coral Reefs featured story .
Remotely located in the central Pacific Ocean, south of Hawaii, the Line Islands provide a remarkable research opportunity. The archipelago includes coral reefs reflecting the whole spectrum of...
A group of students pick up trash along the coast of Guyana during the Ocean Conservancy's 2012 Coastal Cleanup, which it organizes in countries around the world every year. In 2013, nearly 650,000...
These statistics come from a United Nations Food & Agriculture Organization 2007 review of the status of global fish stocks. Learn more in our Sustainable Seafood section .
Dr. Sylvia Earle, at the Select Committee on Energy Independence and Global Warming's hearing: “ Rising Tides, Rising Temperatures: Global Warming’s Impacts on the Oceans .” Dr. Earle is referred to...
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