news @ nature.com - Eels imitate Alien - Fearsome fish have protruding jaws in their throats to grab prey.

Published online: 5 September 2007; |
Michael Hopkin

A moray eel's second jaws lie in wait (top) before snapping out to help catch prey (bottom). Click here to watch a video.
Researchers studying one species of moray eels have uncovered a deadly secret that helps the snake-like fish to swallow their prey. Like the fearsome extraterrestrial from the sci-fi horror classic Alien, these real-life beasts have a second, extendable pair of jaws — encrusted with sharp teeth — that thrusts forward to ensnare hapless fish and shrimp.

WOW!!!