Photo: Jonathan Bird/Getty. By Jeff Warren (Reader's Digest Canada, July 2012) Whitehead calls such socializing the “bonding glue” for sperm-whale society.
But we’re also being shown a window into his most astonishing
proposition: Sperm whales have distinct cultures. Each clan, he argues,
is unique in almost every way: feeding, migration patterns, child-care
preferences, rates of reproduction. Sperm whales also speak different
dialects. In addition to their echolocation clicks, they produce unique
sequences of clicks called “codas,” which change from clan to clan—think
of the variations, say, between Sicilian and Venetian—and are likely a
declaration of group identity.
“These aren’t genetic differences,” says Whitehead. “They’re
learned.” What distinguishes whales—along with chimps, elephants and
perhaps some birds—is the fact that the things they learn persist
through time. They seem to be passed down from generation to generation
until they form part of the distinct identity of the clan.
Whitehead’s evidence adds a whole new dimension to the way we think
about protecting whales. It tells us that if humans break up a group of
sperm whales or killer whales or dolphins, we are destroying not just
individual lives or a population of animals; we are also destroying a
unique dialect, a hunting strategy, a social tradition—an ancient,
living culture. “You have to understand,” Whitehead says, “until a few
hundred thousand years ago most of the culture was in the ocean.
Certainly the most sophisticated cultures on Earth were whales and
dolphins, until the strange bipedal hominid evolved.”...
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