Mud blister worms make their homes in the shells of oysters and other shellfish, where they weaken their hosts.

To compete in a warming Arctic, wolf spiders get bigger, reproduce more, and eat different foods—including other spiders.

Conservationists often translocate giraffes to establish new populations. Two new studies offer insight on what's needed to best ensure success.

Soft corals in the US Virgin Islands recovered from back-to-back hurricanes in 2017, but stony corals haven't—and one species can’t just replace the other.

Soft corals in the US Virgin Islands recovered from back-to-back hurricanes in 2017, but stony corals haven't—and one species can’t just replace the other.

Red Sea coral reefs in the Gulf of Aqaba withstand water temperature irregularities that decimate other corals. It's time to save them, say researchers.

Certain fish are super-urinators, meaning that they contribute more nitrogen to the ecosystem. Unfortunately, they're also prize catches.

Sea urchins boomed after a mysterious disease decimated sea stars off the California coast. Researchers say it shows how redundancy can protect ecosystems.

New findings show the value of preserving Earth's giants, such as elephants, whales, and sequoias.