The issue is of some concern to scientists. Residents puzzled after thousands of mysterious blue creatures wash up on ...

Hundreds of thousands of Velella velella, more commonly known as by-the-wind-sailors, are drifting onto the coastline.

A new review of ocean data suggests that more than 99.999 percent of the global deep seafloor has never been seen by humans.

These spiny or slimy ocean creatures display an astonishing diversity of appearances, behaviors and lifestyles—and many are ...