The conversion of public transport vehicles into aquariums hosting cetaceans reflects a paralysis that arises in our daily life, and namely hinders us from disposing of certain urban facilities. In other words, it is a fracture in our “natural” habitat which is triggered by the intrusion into this system of an alien species. Hence, I used an inversion of meaning in order to underline the way in which the normal life of many animal species is deviated from its natural course through the damaging effect brought about by human activities (i.e. the large fishing nets laid throughout the seas in order to catch fish in which the dolphins, as collateral victims, get hitched and die smothered). We are talking about the loss of habitats, a significant cause of the endangering and, possibly, of the disappearance of some creatures threatened this way.