These images were captured by Swiss photographer Martin Oeggerli using a £250,000 scanning electron microscope stored in his cellar.
"People know a lot about pollen, what with so many hay fever sufferers during the summer," he said. "So it's funny to think that until now a lot of them will have never seen the grains before.
"Pollen is quite robust so you can put it into the microscope camera quite easily. The electron microscope works by scanning the item in question extremely slowly.
