A honeybee's compound eyes are built from thousands of tiny lens-tipped units called ommatidia, each sampling one small patch of the world. The composite image is coarse and mosaic-like compared to a human eye, but the bee's photoreceptors extend into the ultraviolet, revealing "nectar guide" patterns on petals that are completely invisible to us. Meanwhile the two antennae carry thousands of chemoreceptors and mechanoreceptors that smell floral scent plumes, taste nectar, and feel airflow and vibration.
Bees cannot see red — it looks black or is entirely invisible to them — but they see ultraviolet, blue and green, a shifted spectrum called "bee-visible" light. Many flowers evolved UV nectar guides purely because bee eyes, not human eyes, are the customer they are advertising to.
A honeybee patrols a small flower bed while its compound eyes render a low-resolution mosaic view in the corner panel, and its antennae sweep through a drifting field of glowing scent particles.
Compound eyes assemble a coarse image from many ommatidia, and bee-visible ultraviolet reveals nectar-guide bullseyes on petals that are invisible to human eyes. Antennae detect floral scent within a short working radius.
Toggle vision mode to compare human and bee-UV petal patterns, drag the ommatidia slider to sharpen or blur the compound-eye view, adjust scent density, and change flight speed to watch detections accumulate.
Bees cannot perceive red at all, but their photoreceptors extend into ultraviolet — many flowers evolved patterns purely to advertise to bee eyes rather than to ours.