During a gold-digging expedition in the Kolyma region, Russian miners made an incredible discovery – a perfectly preserved ...

The teacher is looking into the water at fish swimming below the surface. But they’re not the only amazing animals to call it home. A frog jumps out behind the teacher with a loud “ribbit”.

From eyes the size of a dinner plate to 360-degree vision, these animals boast extraordinarily efficient ways of seeing ... where many individual lenses focus light onto groups of photoreceptor cells.