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Map showing the range of the eastern and western populations of Atlantic bluefin tuna and their spawning grounds in the Gulf of Mexico and the Mediterranean Sea.
Article

Atlantic Bluefin Tuna (Thunnus thynnus)

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a crocheted microbe
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Make Your Own: Bioluminescent Dinoflagellate

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a shark swims along a sandy seafloor
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An Angel’s Return: How eDNA Was Used to Rediscover the Angelshark

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A researcher holds an arm bone from a "toothed" mysticete whale from Vancouver Island.
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Dispatches from the Field: Treacherous stream crossings and a new fossil find

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a woman with short black hair and a long necklace of pearls sits in front of a microscope and holds a small button coral
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Joan Murrell Owens and her Button Corals

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Human activity is increasing in the Arctic marine environment due to climate change. To help the most vulnerable areas, the Global Marine Program of IUCN, along with partners, is convening a series of workshops aimed at enhancing ecosystem-based management and identifying biologically or ecologically important or vulnerable habitats. Burgerbukta, a bay in Svalbard, Norway, is being managed for ecosystem protection.
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What is the Sea Ice Minimum? (And Why Do We Care)

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Fossil Whale Digsite at Cerro Ballena, Chile
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The Whale Graveyard Whodunit

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A puffin with a mouthful of fish.
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Watching for Fish in the Puffin's Beak

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On coral reefs fish are important links in the food chain that sustains higher-order predators (including humans) and keeps everything in balance.
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Fish Get Risky Around Oil

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A blue-ringed octopus
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How Octopuses and Squids Change Color

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Caribbean reef sharks swim over a coral reef in the Bahamas.
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Ocean Portal's Top Shark Resources

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a woman works on a ship in a hard hat and vest
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Swimming Against the Tide

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