2. Balloons are a danger to wildlife
Debris from balloons represents a danger, because animals may become entangled in ribbons preventing normal foraging activity. Animals also mistake balloon debris for food and ingest the material, which may block the stomach or intestines and lead to starvation.
Photo to the right: this Guillemot (Uria aalge) became entangled in a ribbon with remains of the latex balloon and plastic valve.