I wonder if the dolphins are smarter than us.
Perhaps they have language and they can talk to each other when they want to.
Perhaps they're aware of people and just as capable as us of creating machines, buildings, boats, computers.. but why, they say? What could be better than to swim in the sea, dancing and playing and experiencing true freedom?
If this were true, dolphins would be resolving themselves to take only what nature offers, and accept whatever nature decides to take away. Perhaps that's the only sustainable existence anyway, and maybe they know it but we don't.
Just a funny thought.