The ocean is still one of the biggest mysteries on Earth, and the deeper you go, the stranger it gets. Far below the surface, where sunlight can’t reach, lives a world full of creatures that look more ...

Down in the midnight zone, where light fades to nothing, a single breath becomes a long commitment. Sperm whales slip beneath the surface and vanish into cold pressure that would crush most animals.

Scientists have filmed a never-before-seen species of deep-sea squid burying itself upside down in the seafloor — a behavior never documented in cephalopods. They captured the bizarre scene while ...