In many ways, the deep ocean feels like an entirely different planet from the one we live on—home to some of Earth’s most extraordinary creatures, two of the most evocative being the largest toothed ...

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.

We rarely see giant squids (Architeuthis dux) even though they inhabit oceans worldwide. These mysterious creatures typically live in the “Twilight Zone” of the deep ocean, between 1,000 and 2,000 ...

Some nights, when I should be doing something sensible or useful, I end up looking at pictures of blue whales and feeling very, very tiny. We talk a lot about the megafauna that are gone – mammoths, ...