http://www.youtube.com/watch?v=Ee7lhNOCGhY

This large size leptocephalus must be a species of Muraenidae (moray eels), and probably the larva of a long thin ribbon eel, which is metamorphosing, not feeding, and is entering shallow water to finish metamorphosis into a young eel. (Larva identified by Michael J. Miller) Leptocephali are the unusual transparent larvae of eels and their close relatives. Because they are transparent they are so hard to spot and are hardly ever sighted. We were lucky enough to see one of them!! Filmed by Barry Haythorne and Rob Rutgers, HRF U/W Production

Marvelous sight. Thanks for sharing.

Fascinating creature!