Discovered in the deep: the squid that sees both ways at once

Living in the twilight zone, cockeye squid float between two worlds and have adapted to keep an eye on both

Cockeye squid face a conundrum. Living hundreds of metres underwater, they float in between two worlds. Above them is the surface ocean, where a dim blue fraction of sunlight filters down. Below them is the deep sea, sunless and black. Which way to look?

Their mismatched eyes solve the problem – by letting them gaze into both worlds at once.