Do not glow in the dark : lighting effects only occur under actinic lighting; blue or purple light is recommended. Ideal decoration: planned floating jellyfish imitations float freely and gracefully (will not automatically move like real spiritual jellyfish.) Smart Fish Farm: Made of environmentally friendly silicone, non-toxic, tasteless and durable. Easy to use: just connect the suction cup and it is secured by an invisible rope. The world of 6 colors: size 5 x 12 cm The package contains: 6 x artificial blue, purple, green, orange, pink and yellow jellyfish. Delivery quantity: six pieces