Photo of the Day
A close-up of a scallop's white tentacles, a few of them with eyes.
June 29, 2026 | As Far as the Eyes Can See
A close-up of a king scallop (Pecten maximus), which can have hundreds of complex eyes. Found on the edge of the mantle lining the scallop’s shell, each eye contains a microscopic mirror made of guanine crystals. Unlike mammal eyes that contain one retina, the mirrors in a scallop’s eyes reflect and focus light onto two separate retinas.
