Search Results for: Sharks

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771 results
  1. Oceans

    Sharks face rising odds of extinction even as other big fish populations recover

    Over the last 70 years, large ocean fishes like tuna and marlin have been recovering from overfishing. But sharks continue to decline toward extinction.

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  2. Ecosystems

    Tiger sharks helped discover the world’s largest seagrass prairie

    Instrument-equipped sharks went where divers couldn’t to survey the Bahama Banks seagrass ecosystem.

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  3. Animals

    One mountain in Brazil is home to a surprising number of these parasitic wasps

    Darwin wasps were thought to prefer temperate areas. But researchers scoured a mountain in the Brazilian tropics and found nearly a hundred species.

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  4. The animal kingdom never ceases to amaze

    Editor in chief Nancy Shute revels in the wonder of animals, from psychedelic toads to extinct pterosaurs.

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  5. Animals

    Whale sharks may be the world’s largest omnivores

    An analysis of the sharks’ skin shows that the animals eat and digest algae.

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  6. Science & Society

    Humans exploit about one-third of wild vertebrate species

    An analysis of nearly 47,000 vertebrate animal species reveals that using them for food, medicine or the pet trade is helping push some toward extinction.

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  7. Paleontology

    Paleontology has a ‘parachute science’ problem. Here’s how it plays out in 3 nations

    When researchers study fossils from lower-income countries, they often engage in dubious or illegal practices that can stifle science.

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  8. Paleontology

    Megatooth sharks may have been higher on the food chain than any ocean animal ever

    Some megalodons and their ancestors were the ultimate apex predators, outeating all known marine animals, researchers report.

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  9. Paleontology

    Great white sharks may have helped drive megalodons to extinction

    Analyzing zinc levels in shark teeth hints that megalodons and great whites competed with each other for food.

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  10. Animals

    A global report finds amphibians are still in peril. But it’s not all bad news

    A survey of about 8,000 amphibian species provides the latest update on extinction risk trends stretching back to 1980.

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  11. Animals

    This marine biologist is on a mission to save endangered rays

    Jessica Pate and the Florida Manta Project confirm that endangered mantas are mating and sicklefin devils are migrating along the East Coast.

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  12. Paleontology

    Ancient fish fossils highlight the strangeness of our vertebrate ancestors

    New fossils are revealing the earliest jawed vertebrates — a group that encompasses 99 percent of all living vertebrates on Earth, including humans.

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