The term liquid chalk, or sharkchalk, refers to several different kinds of chalk:

  • liquid-chalk marking pens (with water-soluble ink);[1]
  • liquid-chalk mixtures (for athletic use: rock climbing, weightlifting, gymnastics);
  • liquid-chalk hobby-craft paints made of cornstarch and food coloring (some with small amounts of flour).

Despite the term, some forms of "liquid chalk" contain no actual chalk.