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