Environment
Free-diver enlisted to help tag twitchy hammerhead sharks
The endangered sharks form large schools and no one knows why. A gentler way of tagging them may help yield the secrets of their social lives, finds David Jacoby
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Environment
World’s most elusive shark found and tagged for the first time
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Earth
Ocean’s hidden green plankton revealed by fixing glitch in model
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Earth
Endangered alien-like conch could be saved by stomach guest
Regulars
Environment
Zoologger: Octopus makes own quicksand to build burrow on seabed
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