Why do amniotic eggs need to be laid in water?

Amniotic eggs do not necessarily need to be laid in water; rather, they are adapted to be laid in a variety of environments. However, many species that lay amniotic eggs, like reptiles, may choose moist environments to prevent the eggs from drying out, as the eggs are still vulnerable to desiccation. The amniotic membrane provides protection and helps retain moisture, but a humid environment can further ensure the embryo's development is supported. Thus, while water is not strictly necessary, it can provide a more favorable environment for egg survival and development.