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Cetaceans are known to be among the most clever and intelligent of all mammals. They have brains that are roughly the same size as humans or larger, which are similarly or superiorly complex (although differently evolved in structure). This has led some marine biologists to speculate that whales, and other Cetaceans, could be as intelligent as humans, and may even have several unknown communicative abilities, that surpass our current understanding through sonar and other means.

Critics say that if cetaceans were as smart as us there’d be more evidence of it. But what type of evidence would suffice? The fact that Cetaceans are suffering from (rather than creating) the kind of environmental suicide that humans indulge in, is not necessarily proof of inferiority.

Now Australian scientists studying humpback whales sounds say they have begun to decode the whale's mysterious communication system. They say they’ve already identified male “pick-up lines” as well as motherly warnings.