Not many people can say they've been diving out of a cage with great white sharks. These divers had a special encounter with one while diving off Catalina Island, California.
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New discoveries are appearing in the wake of melting mountain ice, shrinking lakes and falling water levels.
Higuera's 20 years documenting life around the Gulf of California and Revillagigedo Islands have substantially contributed to photo-ID databases of animals from manta rays to orcas.
The Ocean Voyages Institute retrieved 211,644 pounds of discarded fishing gear, consumer plastics and other waste—some of which had been floating for decades.
Sixteen new stamps feature the waters and wildlife protected by the National Marine Sanctuary System, including a pufferfish and sand tiger shark.
Sunk in 2019, the old Lockheed Martin L1011 Tristar airplane has become an artificial reef and a world-class dive site.
The *Melibe* nudibranch noticed a crack in the ecological framework to be filled with a body plan just crazy enough that it could work.
The Mexican government has invoked its national security powers to push forward the construction of a tourist train being built the Caribbean coast, threatening its cave systems.