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

Scientists discovered deep Arctic methane mounds that release gas, shape ecosystems, and inform climate risks.

Experts interviewed by the BBC aren't sure why the octopus pieces rose from the creature's dim dwelling layer and washed ...

Scientists have long assumed the deep-sea Alicella gigantea was an uncommon survivor of the abyss.

Far below the ocean’s surface, in a remote stretch of the Pacific between Hawaii and Mexico, scientists have mapped 788 ...

Giant amphipod species Alicella gigantea, once thought to be very rare, is found to inhabit the majority of Earth's deep ...

A rare purple sea snail (Janthina) washes ashore in San Deigo. Scientists reveal its floating bubble-raft lifestyle, striking violet colour and how ocean currents unexpectedly carried it to the beach.

As companies search underwater for resources, scientists are taking inventory of the ocean-dwelling creatures that could be ...

A seven-arm octopus was spotted in Monterey Bay in Nov. 6, 2025; the 'rarely seen' deep-sea octopus was spotted by ...

From giant stick bugs to rarely seen sea creatures, these animal videos fascinated us—and led to new scientific discoveries.

The 30cm-long (11.8in) juvenile was spotted at a depth of 600m (1,968ft), near the South Sandwich Islands in the south ...

From transparent frogs and egg-laying mammals to deep-sea oddities, here’s a look at animals with unusual features that are ...