Life in the dark

Otters are sprainting the town red (well, black) and are being spotted in city rivers across the UK.

The best places to hang out with bats and how to take them under your wing.

Discover what happened to a rare bat that found itself in a high street shop.

What nocturnal insects will you find where you live?

Cave divers are at the forefront of the search for life in the planet's deepest and darkest subterranean worlds.

Discover the rocky abyss and meet some unusual residents thriving in the absolute darkness of caves.

Some of our scientists go to extreme lengths for their research, diving into deep and dangerous underwater caves.

Worms and snails are living in cavities under the bottom of the sea.

Named after its prominent ear-like fins, there's much more to this fascinating octopus than its adorable appearance.

An expedition to some of the Earth's deepest ocean trenches has broken records for deep-sea fish.

Deep in the ocean a species of worm is living life on the edge, making its home inside an animal that could eat it.

A curator unravels the mystery of the woodlouse's gargantuan deep-sea cousin. 

What is a hydrothermal vent and did life on Earth begin at these underwater locations?

Lanternfish are one of many animals that light up the ocean with their glowing bodies.

Discover how in death, whales can sustain life for decades.