- You can submit any short film which has been released after January 2016.
- You can submit any national or international short film (fiction, animated or documentary) that focuses on Environment.
- Each participant may submit more than one short film.
- Films can be submitted in English, Spanish, Catalan or French. Participants have to add subtitles in any of these four languages.
- The length of the short film cannot exceed: 10 minutes for fiction and animated films. 12 minutes for documentaries.

This is just an excerpt of the regulations, carefully read the complete regulations before submitting.