I never thought of that one, that linguistics could be driving cultural things. There are some thoughts that that does happen in humans, that languages have different characteristics and that influences in some ways how different groups behave, and I suppose it might in whales.

But one thing that seems pretty clear when we look at human religion is that it's highly tied in with human culture. So if, as seems to be the case, culture's governing a lot of what whales do, it's perhaps not an unreasonable hypothesis to think that it's got elements of...what I guess you'd call the supernatural.

I don't think in biology it's very controversial at all. Whether certain behavior is culture or is not culture is argued. I think virtually all biologists would agree that some animal behavior is culture. Bird song is a good example.

Conversation with animals could happen, but I think it would be easier for it to happen with creatures we share a bit more with - those that have been bred to interact with us, like dogs or horses, or ones to whom we have a natural evolutionary link, like chimps and other nonhuman apes. I mean, we do communicate with dolphins and whales, but we're not trying to get to the depths of their understandings. I feel that with animals as different from us as the whales and dolphins, it's likely to work better with us just watching them and trying to figure them out.

I was very lucky. I was just finishing my PhD at Cambridge in 1981. This opportunity came up because whaling was drawing to an end. There was the prospect of a moratorium, and one of the arguments that was brought up, especially by Japanese whalers, was that, if we didn't have whaling, we would know nothing of whales. All the science depends on having dead animals, they argued, so that's one of the benefits of the whaling industry.

A bunch of individuals do the same thing because they learned from watching each other or somebody else. That's what we would call culture.

The actual communicative value of what we say is usually quite small. I've lived for times in small, isolated fishing villages, where everyone knows everyone each other and everyone knows what's going on and everyone's watched the same TV programs and, really, there's not a whole lot of new information to convey. But there's still a lot of talking. What's said doesn't seem to matter; that you say it, and who you say it to, and how you say it is what matters.