Poor Impulse Control.

http://www.cnn.com/2003/WORLD/europe/02/10/offbeat.forehead.ads/index.html

Ow ow ow ow ow ow.

The title is crab versus pipeline. Taken at 6000 feet below the surface, and the pipeline (which is having a slit cut in it) is a vacuum. Crab wanders onscreen unexpectedly. Oops.

http://crustacea.nhm.org/~dean2/crab.html