Well, they seem to not understand that they can jump over the net and escape the capture. They (wild cetaceans especially) are not very interested in establishi

Well, they seem to not understand that they can jump over the net and escape the capture. They (wild cetaceans especially) are not very interested in establishing contact with another sentient species ( us). In all experiments on non-human intelligence, only Alex, the grey parrot, actually asked the question. Having said that, we need to realize that we still do not have sufficient knowledge to argue either way. We are dealing with species who rely on sound more than humans ever would. We still do not fully understand what is going on there, echolocation has been studied for 60 years, last year new echolocation clicks types were discovered. Do not also forget that our knowledge is mostly about bottlenose dolphins, but there are many other species. Last year it was also reported that humble harbor porpoises are not as asocial as they thought to be, and in fact, communicate with each other via pulsed signals produced at higher frequencies not audible to their predators.