It turns out that 14-day sperm tadpole. David Spears, a former zoologist, photographs tadpoles in his home laboratory under a microscope, as long as they have not yet turned into a normal frog.
It may seem like a tadpole smiling, looking into the camera - says Spears. - But what we think the eyes, in fact - the nostrils. The eyes of the tadpole is much higher, in the back & quot ;. A smile "used" for scraping algae.
via source