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an oyster shell on a beach
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Oyster Shell

 Oysters filter about 50 gallons of water a day. ...
marsh grass by the coast
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Invasive Grass

 In China, a marsh grass called Spartina alterniflora was introduced in...
A Pholas dactylus clam illustration.
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The Borer of Holes

 These clams (Pholas dactylus) are dazzling to see.  From their encased homes,...
A shimmering bobtail squid.
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Bobtail Squid Shimmers

 Within hours of birth, the Hawaiian bobtail squid attracts bioluminescent bacteria,...
The loco (Concholepas concholepas, often called the Chilean abalone, although it isn’t actually an abalone) is found along the entire coast of Chile.
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The Loco of Chile

 The loco (Concholepas concholepas, often called the Chilean abalone, although it...
Juvenile Clam with Tentacles
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Spaceship Mollusk

 No, this is not an alien spaceship from another world—it is a baby file clam...
Pearl oysters create pearls when a hard particle is coated with calcium carbonate (nacre) after entering the oyster.
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Pearls of Wisdom

 When hoping to discover a pearl, looking inside one of the oysters you slurp may...
The mauve stinger is a glowing jellyfish.
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Glowing Mauve

 The mauve stinger’s (Pelagia noctiluca) name in German means “night light,”...