• World Map of Ocean Trash

    World Map of Ocean Trash

    Spanish expedition maps trash in all five ocean collection zones for the first time and makes a discovery.

  • Help Save the Ocean

    Help Save the Ocean

    Are you concerned about the health of our ocean? Learn ten things you can do to help save it.

  • Greatest Threat to Mediterranean Fish

    Greatest Threat to Mediterranean Fish

    Enric Sala reveals what is even more dangerous than pollution, invasive species, or climate change.

  • Marine Pollution

    Marine Pollution

    Human activities are threatening the health of the world's oceans. More than 80 percent of marine pollution comes from land-based activities.

  •  Photos: Sharks Hunt Lionfish

    Photos: Sharks Hunt Lionfish

    Divers in Honduras are trying to help the top predators acquire a taste for the destructive invasive species, described by one expert as "rats of the sea."

  • U.S. Marine Protected Areas

    U.S. Marine Protected Areas

    The United States' nearly 1,800 marine protected areas contain some of the country's most spectacular reefs, archaeological sites and diving sites.

  • Overfishing


    Ocean overfishing is simply the taking of wildlife from the sea at rates too high for fished species to replace themselves.

  • Albatross Internet Darling Takes First Flight

    Albatross Internet Darling Takes First Flight

    The first albatross nest cam captured a chick's life from hatching to fledging—and offered a new look at an enigmatic species.

  • Exotic Plants Invading Antarctica

    Exotic Plants Invading Antarctica

    Antarctic tourists and scientists may be inadvertently seeding the icy continent with invasive species, a new study says.

  • Sea Temperature Rise

    Sea Temperature Rise

    Warmer oceans can lead to higher sea levels, stronger storms, and marine diseases.

  • Ocean Acidification

    Ocean Acidification

    The introduction of massive amounts of CO2 into the seas is altering water chemistry and affecting the life cycles of many marine organisms.

  • Caribbean Corals Mostly Dead

    Caribbean Corals Mostly Dead

    The Caribbean’s coral reefs have collapsed, mostly due to overfishing and climate change, according to a new report released by the International Union for Conservation of Nature (IUCN).

  • Marine Habitat Destruction

    Marine Habitat Destruction

    Most areas of the world's oceans are experiencing habitat loss. But coastal areas, with their closeness to human population centers, have suffered disproportionately and mainly from man-made stresses.

  • Sea Level Rise

    Sea Level Rise

    The annual rate of sea level rise over the past 20 years has been roughly twice the average speed of the preceding 80 years. How high will it go?

  • Marine Invasive Species

    Marine Invasive Species

    Learn about the environmental issue of marine invasive species and its consequences in the ocean.

  • Gulf Oil Crisis

    Gulf Oil Crisis

    Now that the well has been capped, the long-term effects of the spill on the environment are still unknown.