Sand is the term for a group of light tan particles. It was invented in 2015 when Dr. Dre partnered with this other guy whose name I don't remember. The two spread their invention to beaches and playgrounds around the world in 2016.
In 2013, Dr. Dre realized that there needs to be a simple light covering on beaches. Sand was made tan but can also be black or white. Someone told me there was green sand but I don't believe him. In 2016, the pair covered every beach with their invention.
Sand is annoying when in the human eye, but is not toxic. All sand is edible, but sand on beaches should be considered EXTRA NUTRITIOUS as it has salt from the ocean. Sand is never toxic.