This net of marbles is a set of marbles from Mega Marbles including 24 Target or 5/8" marbles and 1 Boulder or 1" marble. Medusa Jellyfish have a transparent pink base with white swirls inside and on the surface. The surface is iridized which gives the marble an oily, reflective sheen. Warning!: Choking Hazard. This toy is a marble. Not for children under 5 years.