More Human impacts

Sharks are much older than dinosaurs. Their ancestry dates back more than 400 million years, and they are one of evolution’s greatest success stories. These animals are uniquely adapted to their...
Dr. Mahmood Shivji explains how shark DNA is used as evidence to prosecute shark fin poachers . What is shark finning? Find out here .
Mangrove is the name for a tree—and also for a complex ecosystem—that bridges land and sea. There are around 70 species of mangrove trees (meaning trees that can grow in salty water and soils), but...
A lot can happen in five years. Since 2007, the concentration of carbon dioxide in the atmosphere has continued to go up, reaching a concentration of 400 parts per million, and with it Arctic sea ice...
While the Ross Sea is perhaps the most pristine place left in the world’s ocean, the human footprint is fast changing this last place. Even as the effects of climate change are redefining the very...
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...
Grey reef sharks ( Carcharhinus amblyrhynchos ) are among the most versatile and tough predators on a Pacific coral reef, but they are also among the most vulnerable species, as they are threatened...
Algae, like all organisms, normally grow in balance with their ecosystems, limited by the amount of nutrients in the water. But sometimes, certain species of algae reproduce so rapidly that they...
A placard warns residents that water—and anything else—that goes own this storm drain makes its way into the Potomac River and, eventually the ocean.
Sandy beaches are home to a Diversity of Life In the Shores and Shallows Gallery of the Smithsonian's Sant Ocean Hall , a beach display features magnified grains of sand and the tiny beach critters...
While bottom trawling—a fishing method that drags a large net with heavy weights across the seafloor—fishermen often catch more than their target fish. Here, they've scooped up a large deep-sea coral...
Woods Hole scientists operate an ROV to sample the oil spewing from the ruptured Macondo Well. After the April 20, 2010 explosion of the Deepwater Horizon drilling platform in the Gulf of Mexico,...
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...
A stormy sea lashes the village of Shismaref, Alaska, where the coastline has eroded 30–90 m (100–300 ft) in the past 30 years.
CREDIT: Wikimedia User “Fisherman” Because of consumer demand for sashimi (a fresh raw seafood dish), the fishing pressure on Atlantic bluefin tuna is extraordinarily high. The sale of a single...
North Atlantic right whales and ocean-going vessels often cross paths. Researchers have worked to show the interactions between whales and ships in order to protect the whales from collision. More...
The ocean, which we often break into five large ocean basins, covers 71 percent of the Earth's surface and holds over 1.3 billion cubic km of water. This massive space also holds over 99 percent of...
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...
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