A larval stage is a transitional phase in the life cycle of many organisms, particularly invertebrates and certain vertebrates. These life stages are characterized by distinct morphological features that differentiate them from the adult form, and their primary function is growth and accumulation of energy to support later developmental changes. The period culminates in metamorphosis, a profound biological transformation that leads to the sexually mature adult. The specific form, diet, and ecological role of the larva are highly dependent on the species and the habitat in which the organism develops.