Eyes across the waterlineSourced
Whirligig beetles have divided compound eyes
Whirligig beetles commonly swim in circles at the water’s surface. Each compound eye has upper and lower portions: one above the waterline and the other below when the beetle floats. This arrangement is thought to support vision in both environments.
Life at a boundary appears in the design of the eyes.
Summary / translation: Unbubly · CC BY-SA 4.0
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Whirligig beetle · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-10