| | Pufferfish Inflation (Site not responding. Last check: 2007-10-08) |
 | | But when threatened, the puffer undergoes a remarkable transformation, its body swelling until the fish is three times its usual size and has become a rigid, near-perfect sphere covered in spiky armor-not a good design for swimming but decidedly discouraging to attackers. |
 | | And the pleats of a puffer's stomach are more extensive than those of a kilt: inside the largest pleats (each of which is about three millimeters wide) are smaller folds, with yet smaller folds inside each one, and so on, down to pleats so tiny that they can be seen only through a microscope. |
 | | The fish's usual modus operandi is to shoot jets of water at the urchin's side until it rolls over, exposing its unprotected "belly" (actually its mouth, with which it grazes on the seafloor). |
| biomechanics.bio.uci.edu /_html/nh_biomech/pufferfish/puffer.htm (830 words) |