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Crittercam footage during the pre-engulfment phase of a rolling lunge near the sea surface. Following a right-hand turn (t =−11s), a rolling manoeuvre results in the rotation of the visual field indicated by the asymmetrically shaped krill patch (arrows, −10 s < t < −1 s). The outward rotation of the left mandible is evident as engulfment begins (−1 s < t < 0 s).
