Because of land being merged into water, it is natural to conclude that the beginning of life was aquatic. This is confirmed in Padma Purana that the species of life evolved from aquatics to plants, vegetables, trees; thereafter insects, reptiles, flies, birds, then beasts, and then human kind. This is the gradual process of evolution of species of life. But we do not accept Darwin's theory. According to Darwin's theory, homo sapiens came later on, but we see that the most intelligent personality, Brahma, is born first. So according to Vedic knowledge, Darwin or similar mental speculators are rejected so far the fact is concerned.
Letter to Hayagriva, 9 March, 1970