Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

The vast array of organisms in the deep sea remains a mystery to humans. Now, marine biologists can add one more puzzle to the list. A collection of odd materials was discovered nearly four miles ...

Beneath the ocean's surface lies a world of perpetual darkness, home to some of Earth's most bizarre and fascinating creatures. These deep-sea inhabitants have evolved extraordinary adaptations to ...