Marine animals can be fascinating and quite beautiful. However, you should not approach some of them. Certain fish and jellyfish are highly poisonous, and contact with them can sometimes be fatal.

A bumpy snailfish, Andean mouse opossum and ancient sea cow were just some of the many species described in 2025.

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.

Deep in the Pacific, humans have tracked a mysterious whale’s call for decades—but no other whale seems to respond. And now, we might be running out of time to find the source. As far as deep-sea ...

This secretive native of both sides of the Caribbean—from Belize to the British Virgin Islands—hides out on ledges and in caves of reefs up to 140 feet below the surface of the sea. Although not being ...

Monterey Bay researchers have discovered a remarkable new species of sea slug that lives in the deep sea. The glowing nudibranch swims through the ocean’s midnight zone with a large gelatinous hood ...

Cetaceans are among the most intelligent creatures in the ocean and many whales have used their big brains to develop cunning ...

From shallow reefs to pitch-black depths, the ocean is alive with sparkling lights. Fish, squid, clams and plankton have found a wide range of ways to glow, shimmer and flash, lighting up the dark ...

Wildlife lover Ayse Genisel was delighted to spot a baby sea otter through her binoculars, but people trying to get too close ...

Is the sea turtle your spirit animal? The sea turtle has been a powerful symbol for many cultures around the world for centuries. In some cultures, the turtle is seen as a symbol of good luck and ...