Cruising Greenland's dramatic fjords and colorful villages where midnight sun meets ancient ice—but Mother Nature always has ...

Invasive species like lionfish threaten ecosystems by disrupting food chains, damaging coral reefs, and crowding out native ...

Nighttime underwater photos show fish hanging out with jellyfish and anemones — perhaps seeking their protection.

From illegally caught to extremely high in mercury, these are five fish you should bypass the next time you're eating out and are craving seafood.

Zebra mussels have invaded North America in a serious way. From the Canadian border to the Mississippi River, the National ...

Explore Mammoth Cave National Park to encounter the diversity of wildlife that live in its forests, streams, lakes, and caves ...

For corals to recover, the world would need to drastically ramp up climate action to reverse temperatures, the scientists ...