Photo: Jonathan Bird/Getty
Back on the boat, the sperm whales surge towards each other. Before our trip, Whitehead showed me underwater footage of sperm whales socializing, and it was spellbinding. The sensuality of their movements as they slowly rolled and pivoted, scraping their long serrated spines along one another’s pale bellies. The way they sent pulses of sounds into one another’s sides. The scene seemed suffused with a mutual attentiveness and care that I found moving.
Despite not being able to locate the seat of consciousness in the animal brain-something true for humans as well-most scientists no longer ask whether animals have inner experiences. Some degree of sentience is considered self-evident. For neuroscientist Jaak Panksepp, one of the world’s leading experts on the neural origins of mind and emotion, “the denial of consciousness in animals is as improbable as the pre-scientific anthropocentric view that the sun revolves around the Earth.”
But what do we mean by “consciousness”? At its most basic, consciousness can simply mean being aware of your surroundings. By this definition, of course, nearly every animal would have some form of awareness. Many different species perform a whole range of social actions, including co-operative behaviours and maternal care. Bees show complex activities-but does that mean they’re conscious? Quite possibly. The question now is no longer whether animals have minds, but what kind of minds.
Scientists now understand the mind as a much larger phenomenon, with many different species’ expressions. Humans and animals are not separated by some yawning chasm-the fact that we share basic brain structures suggests we might also share similar cognitive structures-like thousands of different operating systems coded to run the same apps. Cetaceans have been a big part of this story, in part because of Whitehead’s findings, but also because of the experiments of dedicated researchers such as the University of Hawaii’s Lou Herman, who has proved that dolphins are capable of complex problem solving, demonstrating prodigious feats of learning, memory and creativity. One well-known anecdote involves a clever aquarium dolphin who was rewarded by his trainers for retrieving one piece of garbage after another. It turns out that, in order to maximize his fishy rewards, the dolphin had stashed an entire newspaper at the bottom of the tank and was very deliberately tearing off one small piece at a time.
But the most game-changing research may be the reappraisal of the whale brain currently under way. Marino has spent 20 years studying the whale brain’s structure and evolution, and found that it’s not only large (it’s second only to a human’s in its brain-to-body ratio) but also contains many braided cell structures and areas of dense connectivity. The term for this is “convoluted”-the cortex folds in on itself to increase its surface area inside the skull, thus giving the brain its ridged appearance (the brains of less intelligent animals are much smoother). What’s more, the history of the whale brain has been very different from those of primates and other mammals. Thirty-five million years ago it began arranging its parts into an utterly unique functional layout and structure. This achievement, says Marino, represents “an alternative evolutionary route to complex intelligence.”
The most intriguing part of the whale brain for Marino is the limbic system, which, in mammals, handles the processing of emotions. In some respects, she found this part of the whale brain is actually more convoluted than our own. In fact it’s so large it erupts into the cortex in the form of an extra paralimbic lobe. The location of the lobe suggests it is involved in a unique mash-up between emotional and cognitive thinking, perhaps some mix of social communication and self-awareness that we do not currently understand.
“Whales are arguably the most socially connected, communicative and coordinated mammals on the planet, including humans,” says Marino. “Killer whales, for instance, do not kill or even seriously harm one another in the wild, despite the fact that there is competition for prey and mates and there are disagreements. Their social rules prohibit real violence, and they seem to have worked out a way to peacefully manage the partitioning of resources among different groups. That is something we humans haven’t done yet.”
Whitehead points down: Two of the whales have suddenly become curious about us. Torres, intent on recording the codas, unspooled a long hydrophone into the water. The whales begin echolocating furiously on the blue cable, which trails behind the boat. I can feel the echolocation pings roll through the hull below me as I pull in the line, concerned the whales might bite the cord, as happened on Whitehead’s last trip. One of the whales follows the hydrophone in. I feel as if I’m fishing for giants. Finally, she pivots onto her side and fixes me with a large watery eye before rolling back to her family.
Whitehead, Marino and a few other whale scientists believe that echolocation-which Whitehead calls the “world’s most powerful imaging device”-might play a central role in whales’ social sophistication. It is possible that the faculty is used like an ultrasound to see inside bodies. “The sonar system may see, in great detail, the internal organs of all the other members of the group,” says Whitehead. “So there’s no hiding what one has eaten, whether one’s sexually receptive, whether one’s pregnant, whether one’s sick. Presumably, this changes social life a lot.”
It doesn’t stop there. An enormous amount of information is contained in the body: accelerated beating of the heart, tightness in the diaphragm, tension in the muscles-all of these registers of information may well be processed by the whale’s huge associative cortexes at lightning-fast speed. And not in isolation-most astounding of all is the possibility that all of this may be shared. There is evidence to suggest that dolphins and sperm whales can “eavesdrop” on another’s returning echoes, an ability akin to seeing through another’s eyes. Thus a group of widely dispersed whales may in some sense be part of a single sensory loop, sensitive to every twitch and shudder in the wide phenomenal world.
Photo: Jonathan Bird/Getty
One of the larger females has begun to “spy hop”-rising up vertically out of the water like a thick periscope, exposing her eyes to the surface. I have the sense that I’m being stared at by another form of intelligence. It’s both thrilling and a little disconcerting, as though I’m being asked to partake in an exchange I haven’t really prepared for.
Some of the critics of the declaration certainly feel this way. National Post columnist and policy analyst Tasha Kheiriddin was quick to point out that in order for an animal to have rights, it must be part of a social contract, something impossible between animals and humans. “An animal owns no property. It cannot be taxed. It bears no responsibility, legal or otherwise for its actions: You cannot sue a dolphin if it bites you or wrecks your boat.”
Marino says there are other ways to look at it. “We don’t expect human infants to have responsibilities,” she says, “yet we still consider them people.” Ultimately, Marino argues, the declaration becomes pretty hard to dismiss if you stick with basic rights. “We are not saying that dolphins should vote or go to school-obviously this is preposterous. What we are saying is that the rights of a species should be based on their critical needs. In the case of whales, they should have the right not to be killed and tortured and confined, the right to live free in their natural environment. This is very basic stuff.”
Marino’s vision for a Cetacean Nation is, at first blush, that of a conservationist. But as I watch the whales I realize there’s also something new in the works here, something that has to do with our own minds, not just whale minds. We’ve always looked to the stars for signs of intelligent life. Now we’re waking up to the idea that such life exists right here. But the facts as we currently understand them-for 35 million years whales have had the largest brains and the most complex cultures on the planet-can’t really tell us what kind of mind we are dealing with. Where, for example, so many of our resources are directed towards manipulating objects and ideas, whales’ emotional and cognitive resources seem to be directed socially, at one another. They have no hands to manipulate the world. But they have brains to feel it, in a way we do not and cannot fully understand.
And yet, for all the exotic otherness of the whale mind, it’s equally true that there are elements that we can know and understand. As any pet owner will attest, we can often tell when an animal is angry or loving or even calculating, because we share those qualities. I can relate to the sperm whales’ need for physical intimacy, to their loyalty to one another, to their curiosity. And these are just the visible behaviours. The science suggests other shared qualities: a capacity for culture, communication and creative problem solving. What you begin to realize about animal minds is that, when we compare ours to theirs, there’s always something distinct and something shared; this ratio simply shifts in relation to the species in question.
So the common core we share with a bacterium is far narrower than that we share with a whale, which in turn is perhaps narrower than that we share with our close cousin the chimp. In a sense the human-to-animal mind question may simply be an exaggerated version of the human-to-human mind question: We can never entirely know another person’s experience-all the more so if that person was raised in a different culture-but there are vast areas of overlap that can, with science and empathy and imagination, be expanded.
What is a person? A being, certainly. But personhood is also a quality that emerges from how we relate to one another. When we deem another entity a “person” we recognize that there’s another point of view present, one with its own internal coherence and integrity. Whatever happens on the legal front in the years to come, the question of animal personhood is foremost a personal one. It will be answered differently by each of us. The true promise of the Cetacean Nation will only be realized to the extent that we, as a species, can recognize we’re surrounded by a rainbow of exotic cultures and narratives. We’re invited to be participating members in the community of nature, connected as though by invisible lines of echolocation to all these other “persons” on our planetary home.
As for the sperm whales, it’s enough, for now, just to watch them. Gradually, they stop playing and begin to drift away from the boat. Then, as if cued by some invisible signal, they roll their broad backs and salute the air with their chiselled flukes. Six clear watermarks float in their wake.