Whales and Dolphins Mourn Their Dead, Just Like Us

Written by on July 21, 2016 in Environment, Wildlife with 12 Comments

Dolphins swimming-compressed

By Traci Watson | National Geographic

Smart and often sociable, whales forge tight bonds with one another. Now it’s clear that those bonds can be stronger than death itself.

More than six species of the marine mammals have been seen clinging to the body of a dead compatriot, probably a podmate or relative, scientists say in a new study.

The most likely explanation for the animals’ refusal to let go of the corpses: grief.

“They are mourning,” says study co-author Melissa Reggente, a biologist at the University of Milano-Bicocca in Italy. “They are in pain and stressed. They know something is wrong.”

Scientists have found a growing number of species, from giraffes to chimps, that behave as if stricken with grief. Elephants, for example, return again and again to the body of a dead companion.

Such findings add to the debate about whether animals feel emotion—and, if they do, how such emotions should influence human treatment of other creatures. (See “Do Crows Hold Funerals for Their Dead?“)

Animal grief can be defined as emotional distress coupled with a disruption of usual behavior, according to Barbara King, emeritus professor of anthropology at William & Mary in Williamsburg, Virginia, and author of the book How Animals Grieve.

Keeping Vigil

For the study, Reggente and colleagues gathered reports, mostly unpublished, of grieving behavior in seven whale species, from the huge sperm whale to the relatively petite spinner dolphin.

They found all seven species have been seen keeping company with their dead in oceans around the globe, according to the study, published recently in the Journal of Mammalogy.

“We found it is very common, and [there is] a worldwide distribution of this behavior,” Reggente says.

Scientists on a boat in the Red Sea, for example, watched an Indo-Pacific bottlenose dolphin push the badly decayed corpse of a smaller dolphin through the water.

After the researchers lassoed the dead animal and began towing it to land to bury it, the adult swam with the body, occasionally touching it, until the water became treacherously shallow. Long after the carcass had been taken away, the adult remained just offshore. (See National Geographic's beautiful whale pictures.)

It’s not clear how the two dolphins were related, but chances are they were either mother and child or close kin, Reggente says.

Such behavior, after all, has an enormous cost: A whale keeping vigil over a dead companion is a whale that isn’t eating or reinforcing its alliances with other whales.

Mourning Loved Ones

Occasionally scientists do have clues about the relationship between the mourner and the dead.

A female killer whale known as L72 was seen off San Juan Island, Washington, bearing a dead newborn in her mouth. L72 bore signs of having recently given birth, and the researchers who spotted her knew enough time had elapsed since her last calf that she was due to have another.

“She was trying to keep the [dead] calf up at the surface the entire time, balancing it on top of her head,” says study co-author Robin Baird of Cascadia Research Collective in Olympia, Washington, who witnessed the mother’s efforts.

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  3. So do hippos and elephants, apes, the list goes on

  4. My heart breaks to know they are still being so mistreated !?

  5. Of course. Anything living will always know pain and grief.

  6. So what we human beeing are not the only species with that kind of feeling.islam holy book said”most of the creatures in earth are like you(humans) gathered in some kind of society.

  7. Kathy Popp Kathy Popp says:

    even my cats acted oddly the first few days after Buckwheat passed. The prowled the house – very unsettled – meowing and meowing. Have seen a horse do that too – call and call for a passed horse companion. Very hard to listen too.

  8. Because animals are way more like us than we were made to believe.
    And dolphins are pretty much people. Sea people. They have languages and even different regional dialects.

  9. jeffhand409@yahoo.com' Jeff says:

    I often think a lot of species may be more advanced than us. How many of them fall into the sick game of work/gather abundance and measure yourself/your neighbor by how much they may have like some do (not me)?
    This article tugs HARD at my heart strings.

  10. Why would anyone consider they didn’t grieve for their loved ones?

  11. SaulaVanhuss@hotmail.com' Keneth Balis says:

    But why are these animals behaving like this, and why is it so widespread? Mourning a dead companion is a time intensive and costly action, which takes away from animals finding food, mating, and creating interactions with other live animals – so it doesn’t make much sense from an evolutionary perspective. Which is why the researchers concluded that they’re likely to be genuinely grieving.

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