“So this is evolution. This evolution theory… It is not theory; it is fact, stated in the Vedic literature, Padma Purana, how we have passed through so many bodies, and ultimately we have got this civilized, human form of body. We have to pass through 900,000 forms of aquatic bodies within the water. Then, gradually, we come to the form of trees and plants. There are 2,000,000 varieties. Then we get the bodies of the insect. There are 900,000 forms of body. Then we enter into the species of birds, 1,000,000 forms of body. Then, after bird’s body, there are 3,000,000 different varieties of beast body. Then, after this period, we become human body, but there are 400,000 species of human body.”
More about evolution from Srila Prabhupada