Literary data on facultative symbiotic relationships between amphibian embryos and unicellular green algae have been considered. Such symbioses may be important for the dispersal and survival of some tailed and anuran amphibians, the embryonic and larval development of which occurs in water. However, many evolutionary trends of amphibians were connected with the transitions to early ontogeny beyond water. Therefore, the symbioses with algae did not play a significant phylogenetic role for this class of animals.