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This week at the Smithsonian Ocean Portal we embark on an experiment we're calling "Make Me Care." The concept is simple: we ask a renowned expert to tell us why we should care about...
“Sea grapes” may sound like something Poseidon would snack on, and not a killer...
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Hopefully you've never bitten into a delicious hunk of snow crab meat and...
These brittlestars ( Ophiothela mirabilis ) are not where they belong. These...

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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...
I am once again leaving my familiar world behind and descending into the abyss below. The first dive of an entirely new expedition is the most magical. I am a member of a scientific research dive...
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...
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...
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...
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-...
During the summer of 1998, scientists at the Virginia Institute of Marine Science made a series of disturbing discoveries in the Chesapeake Bay. In June, they collected an unusual specimen: a single...
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...
If you want to study invasive species in the ocean, the Panama Canal offers a lot to explore. The ships passing through can inadvertently transport plants, animals, and even parasites from the...
“Sea grapes” may sound like something Poseidon would snack on, and not a killer algae. Yet Caulerpa racemosa var. cylindracea poses a serious threat to marine life. Spread by the bilge water of boats...
Pick up any news article about invasive species and you may confuse it with a police blotter. Generally, invasive species are "almost bulletproof" "marauders," "terrorizing" ecosystems and wildlife...
Laurie takes a break collecting invasive species to snap a "selfie" while under the hull of a cargo ship.
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