Discharge of cnidocysts by a sea anemone ; @ Cnidocyst.
As soon as there is contact, the cnidocils start the opening of the nematocysts which project the armed filaments towards the target in contact. This partial sight shows only one small part of the filaments. The length of the filaments is 0,6 millimeter.
Jean Lecomte / Biosphoto
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Image size: 4281x2778 pixels (14.3"x9.3" @300dpi)