Fisherman Dorson Wright of Grand Cayman got a strange catch the other day: a deep sea fish species appropriately named "Great Swallower" swallowing a fish four times its size!
In the belly of the fish was another fish, and this one was clearly much, much bigger. In fact when it was measured it was determined that the fish he picked up had eaten a ‘snake mackerel’ that was more than four times its own length. (Photo: Phillippe Bush, Department of the Environment)
Link (with larger pic)
http://www.mar-eco.no/gallery/bathypelagic_fishes/Chiasmodon_niger_034