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Articles on Oceans

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Mass coral bleaching in 2014 left the Coral Reef Monitoring Program monitoring site at Cheeca Rocks off the Florida Keys a blanket of white. NOAA

Corals are starting to bleach as global ocean temperatures hit record highs

Water temperatures in the 90s off Florida in July are alarming, a NOAA coral scientist writes. Scientists in several North American countries have already spotted coral bleaching off their coasts.
The vessel Polar Prince towing OceanGate Expeditions submersible vessels from St. John’s, N.L., as it leaves to tour the Titanic wreck site on May 29, 2023. (Shutterstock)

Titanic submersible ‘catastrophic implosion’: questions remain about the costs and ethics of rescuing tourist expeditions

A team of rescuers has located debris from the Titan, indicating the end of search-and-rescue efforts. Risky undertakings need to assess the cost and capacity of any potential rescue needs.
Diazotroph (Trichodesmium) bloom in the Coral Sea, captured on 1 September 2019 by the Landsat 8 satellite. The interaction between the physics and biology of the ocean is manifested in these green filaments that snake through the currents. Joshua Stevens/NASA

Climate: modelling micro-algae to better understand the workings of the ocean

The ocean absorbs a quarter of the CO₂ emitted by humans, thanks in particular to phytoplankton, including diazotrophs. Knowing how to model them is crucial to understanding the ocean’s role in climate.

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