|MadSci Network: General Biology|
The gulper eel is a real eel! Here is what I found out: Occasionally brought up from great depths in nets, the gulper eel consists mainly of a huge mouth followed by a large bag of skin and, finally, a very long thin tail. The eel,often 6 feet long, can swallow prey as large or larger than itself. Such features are not particularly rare in deep-sea-creatures, but we do have to briefly describe this grotesque fish to get a delightful anomaly. It seems that in a few recovered specimens, the thin tail is tied in several overhand knots! (de Sylva, Donald P.; "The Gulper Eel and Its Knotty Problem," Sea_Frontiers, 32:104, March-April 1986.)
Try the links in the MadSci Library for more information on General Biology.