50. Oil and water: The swirling, colorful patterns created by mixing oil and water.

49. A cow wearing roller skates and a tutu, balancing on a tightrope over a circus crowd.

48. Watch mechanisms: A close-up of the tiny gears and springs inside a wristwatch.

47. A herd of glowing, translucent deer grazing in a moonlit meadow.

46. A shark riding a bicycle through a busy city street, with pedestrians staring in disbelief.