Super informative and interesting information.
they're definitely not as smart as we are- at least on our scale of intelligence
Wouldn’t intelligence be relative. Unless we’re strixtly talking about communication or language. If their intelligence is only intended to benefit them, maybe they have understood us enough to satisfy their needs. And thus their lack of human curiosity or need to assign a meaning or value to something is not important to them. So they may understand us in way that we haven’t evolved to comprehend. And maybe their senses are more advanced and thus they are more intelligent. Just a rambling thought on the subject of intelligence based on the comparison provided above between humans and dolphins.