Larval eels (Leptocephalus)

Larval eels, known as leptocephali, are the early life stage of eels. They are transparent, leaf-shaped larvae that drift in the ocean for months or even years, depending on the species. During this time, they grow and develop complex features before transforming into miniature adult eels through a process called metamorphosis. Leptocephali are distinct from adult eels both in appearance and behavior, helping them disperse across vast distances in the ocean. This larval stage is essential for the eel's life cycle, enabling them to reach their adult habitats where they grow into mature, reproducing eels.