The ocean is a strange place after dark

This rare bird lives exclusively in Madagascar's wet forests

In a fight for territory, dominant males settle old scores

These animals’ ability to control light renders them almost invisible

How do these typically chill characters stay cool over the long polar summer?

From California to Cambodia, otters are bouncing back

• Conservation

The conjoined twins are the first of their kind

As the weather warms, bluebells cover the woodland floor

They sneak onto their webs and attack

• Spider