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Themisto

Three hyperiids, each with two large eyes and red body showing through their translucent bodies.
K.J. Osborn

These Themisto hyperiids live in the top 200 meters of cold waters around the world. Each of their two large eyes has an upward-looking zone and a downward-looking zone. Each zone can see at different resolutions: the upward-looking zones tend to see better than the downward-looking zones. Scientists think this could be because the animals need to see possible prey or mates that would be found overhead. What would you do with an almost 360 degree view of the water column?