Oceans
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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.
By Nikk Ogasa -
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.
By Jake Buehler -
Climate
Here’s what happened to the Delaware-sized iceberg that broke off Antarctica
The powerful pull of currents in the Southern Ocean probably pulled apart the largest remnant of a massive iceberg that split off Antarctica in 2017.
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Environment
Mangrove forests expand and contract with a lunar cycle
The carbon-sequestering trees grow in a roughly 18-year cycle according to tides influenced by the moon’s orbit, a study in Australia finds.
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Climate
A coral pollution study unexpectedly helped explain Hurricane Maria’s fury
Tracking coral reef pollution in Puerto Rico, conservation researchers discovered by chance how the coastal ocean fueled Hurricane Maria.
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Earth
The Tonga eruption may have spawned a tsunami as tall as the Statue of Liberty
A massive undersea volcanic eruption in the South Pacific in January created a tsunami that was initially 90 meters tall, computer simulations suggest.
By Sid Perkins -
Life
Sea sponges launch slow-motion snot rockets to clean their pores
Sea sponges rely on a sneezing mechanism to clear their pores, using mucus to flush out debris. This mucus provides food for other marine life.
By Jude Coleman -
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.
By Asa Stahl -
Oceans
How some sunscreens damage coral reefs
In lab experiments, sea anemones and coral turned oxybenzone into a toxin activated by light. But helpful algae may provide a layer of protection.
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Climate
Coastal cities around the globe are sinking
Of 99 coastal cities, nearly one-third are sinking in some places at more than a centimeter per year, making them more vulnerable to rising seas.
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Oceans
Even the sea has light pollution. These new maps show its extent
Coastal cities and offshore development create enough light to potentially alter behavior of tiny organisms dozens of meters below the surface.
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Climate
How did we get here? The roots and impacts of the climate crisis
Over the last century and a half, scientists have built a strong case for the roots and impacts of human-caused climate change.