Deep-sea Giant Leptocephalus

Leptocephalus is a transparent, leaf-shaped larval form found in eels and some related fishes. They have a ribbon-like body and are typically transparent, making them difficult to spot in the water. Leptocephali are fascinating because they undergo metamorphosis into the adult eel form during their development. This larval stage helps eels disperse widely across oceans before returning to coastal areas to mature.