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These brittlestars ( Ophiothela mirabilis ) are not where they belong. These animals, usually found in the Pacific Ocean, were first spotted in the Atlantic Ocean off the coast of Brazil in 2000. And...
When people sail the sea, marine organisms tag along. If carried long distances...
During the summer of 1998, scientists at the Virginia Institute of Marine...
The majestic and highly predatory red lionfish ( Pterois volitans ) , native to...

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This bivalve mollusk is native to the Caspian Sea, lagoons of the Black Sea, and their inflowing rivers. It lives in fresh and brackish water and cannot tolerate full seawater. In the 18th and 19th centuries, zebra mussels spread...
Rapa whelks , native to Asia, have invaded the Chesapeake Bay and are...
This ctenophore (a stingless jellyfish-like animal) is native to the east...

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Regardless of what continent you live on, the waters that surround it are home to marine invaders. The ocean is teeming with...
Regardless of what continent you live on, the waters that surround it are home to marine invaders. The ocean is teeming with plants and animals willing and able to move beyond their native habitats...
When people sail the sea, marine organisms tag along. If carried long distances, these hitchhikers can invade and disrupt ecosystems far from their natural homes, pushing out the local species. Some...
Alaska’s pristine coastline is ripe for an influx of invasive marine species such as the European green crab and the rough periwinkle (an Atlantic sea snail), warns a new study by a team of...
When people sail the sea, marine organisms tag along. If carried long distances, these hitchhikers can invade and disrupt ecosystems far from their natural homes, pushing out the local species. Some...
Shellfish from the Chesapeake Bay are prized by seafood lovers. But the Bay's ecosystem and fisheries are threatened by human disturbances, including the introduction of non-native species. Non-...
This ctenophore (a stingless jellyfish-like animal) is native to the east coast of North and South America. In 1982, it was discovered in the Black Sea, where it was transported by ballast water . It...
This photograph, much like Van Gogh’s Starry Night is awhirl with the colors and swishes of hundreds of fish. The focal point, however, is the lionfish. Lionfish ( Pterois antennata ) have been known...
Biofilm (microbial life that clings to underwater painted surfaces and is generally found covering the bottom of ships) is collected from the hull of a cargo ship with a funnel and syringe.
Jellyfish and comb jellies are gelatinous animals that drift through the ocean's water column around the world. They are both beautiful—the jellyfish with their pulsating bells and long, trailing...
The majestic and highly predatory red lionfish ( Pterois volitans ) , native to the Indo-Pacific, is invading Atlantic waters. The lionfish is a popular home aquarium species, and some were most...
Rapa whelks , native to Asia, have invaded the Chesapeake Bay and are raising concerns about economic and ecological impacts to the Bay region due to their shellfish diet. Scientists believe that...
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