9 References in the Jonas Brothers' "Cool" Music Video That Have Fans Going Crazy

OK, so this might be a stretch on my part, but I couldn't help but think that the underwater bit was a subtle nod to "Year 3000." In the song the brothers sing about how not much has changed in the future, but people do live underwater. Perhaps this is the brothers' way at poking fun at how much they have changed since the band first formed.