The petitioners argued that the drilling, in deep waters, is fraught with risk as a potential cause of both earth tremors and oil spills – the Canary Islands, with their huge importance as a tourist destination, being particularly vulnerable to marine oil pollution.
Selon les pétitionnaires, le forage en eau profonde est susceptible de causer des risques sismiques et des fuites de pétrole, les îles Canaries étant particulièrement vulnérables en cas de marée noire vu leur caractère éminemment touristique.