The newly described Ikaria wariootia was a small, wormlike creature that marked an important evolutionary step between early multicellular organisms and more complex modern animals.

Preserved DNA extracted from the rock-like digestive blobs may offer insights into whale ecology.

Most know Rachel Carson for her work on the dangers of chemical pollutants, but the writer’s earlier prose took readers on a tour of a mysterious underwater world.

To help create better conservation and management plans, researchers are measuring how marine organisms move between habitats and populations.

Understanding the dinoflagellates that regularly wreak havoc on marine and nearshore ecosystems in the Gulf of Mexico could help researchers mitigate the damage they cause.

Researchers will inject a relaxin-like hormone into sea cucumbers to boost the animals’ numbers.

A mysterious illness is causing tissue loss in many species.

The unusual cephalopod was spotted on a recent underwater research expedition.

Groups of corals release all of their eggs and sperm once a year, but the timing of their spawning is under threat from climate change.