Figure 3From: Puncture mechanics of cnidarian cnidocysts: a natural actuatorImages depicting before and after cnidocyst discharge via rehydration with water. Isolated Physalia cnidocyst dried in EDTA (left). The capsule remains spherical when dried in this solution. The cnidocyst rapidly everts its stinging thread following rehydration with distilled water (right). Note the ~1 mm thread continues beyond the area depicted in the picture.Back to article page