This photo was taken on a Canon EOS 5D camera. The image depicts food dye reacting with water after being mixed with oil. The oil and food dye were mixed together before being poured on top of a glass of warm water. This slowed the reaction between the food coloring and water because of the barrier the oil created from being hydrophobic. As time increased more food dye was released from the oil into the water creating the swirls you see in the photo above.
Acknowledgments: Ari Matrajt Frid, Jonathon Gruener