"This fundamentally changes how we think about the evolution of complex nervous systems," said biologist Jack Ullrich-Lüter.

NEW YORK (AP) — An underwater voyage has revealed a network of creatures thriving at the bottom of deep-sea ocean trenches. In these extreme environments, the crushing pressure, scant food and lack of ...

Paralvinella hessleri accumulates microscopic particles of arsenic on its outer skin, which reacts with sulfide to form a microscopic armour of yellow orpiment. A bright-yellow worm that lives in deep ...

A deep-sea worm that lives in hydrothermal vents is the first known animal to create orpiment, a toxic, arsenic-containing mineral that was used by artists for centuries A bright-yellow worm that ...

Boaters off the coast of California saw sea creatures feeding, the group said. Getty Images/iStockphoto Boaters off the coast of California got the chance to witness a massive feeding frenzy among sea ...

Two sea creatures were spotted together off the coast of California, boaters said. Getty Images/iStockphoto A pair of sea creatures was spotted off the coast of California, and boaters are calling it ...

Passengers off the coast of California got the chance to spot mama sea creatures swimming in unison with their babies, boaters said. The day began with a pod of common dolphins being spotted along ...