Candyfloss waves. The sea was turned temporarily pink at a beach in San Diego, California, by researchers at the nearby Scripps Institution of Oceanography, who added a non-toxic pink dye to the water to study how plumes of fresh water flowing out into the sea interact with breaking waves. “It’s a really unique experiment,” said Sarah Giddings, a coastal oceanographer at Scripps, in a press statement. “We will combine results from this experiment with an older field study and computer models that will allow us to make progress on understanding how these plumes spread.”