Scientists Saw Blood in the Water and Feared the Worst—Then a Tiny Baby Whale Appeared
“In a cooperative society, if we’re going to succeed, we need to work together, rather than constantly finding reasons to define how we are different.”
A team of researchers off the coast of Dominica had been studying sperm whales when something alarming caught their attention. Red clouds blooming beneath the surface. Massive whales gathered unusually close. Everything pointed to something terrible—until a tiny head broke through. What they witnessed on July 8, 2023, was one of the rarest events in marine biology: a wild sperm whale giving birth, captured on camera.
The rare sperm whale birth almost no one has ever seen
Here’s how rare this was: fewer than 10 percent of cetacean species have ever been observed giving birth in the wild. The last scientific record of a sperm whale birth was in 1986, and that account only included written observations after the delivery.
Before that, there were just a few scattered accounts from whaling vessels. This time, the team deployed drones to film from above, used underwater microphones to record the whales’ vocalizations and relied on shipboard observations and photography to verify individual whales.
“I initially thought that something bad was about to happen, until we saw the little head pop out and then the floppy flukes,” said Shane Gero, a CETI field biologist, per CNN. “And then we knew that it was actually a joyous occasion.”
“This is one of the first detailed, quantitative records of a sperm whale birth in the wild—a life stage we almost never get to see in this species,” said Mauricio Cantor, a behavioral ecologist and assistant professor at Oregon State University’s Marine Mammal Institute who was not involved in the sighting.
11 sperm whales showed up to help a newborn calf survive
The birth itself lasted roughly 30 to 34 minutes from emergence to full delivery, but what happened in the moments afterward is the part that will warm your heart. Eleven whales were present—mostly adult females—and they all pitched in. Adult females like “Faith” and “Hope” took turns lifting the roughly 4-meter (13-foot) newborn calf to the surface so it could breathe. This wasn’t optional kindness—newborn sperm whales are negatively buoyant, meaning they sink. Without help, the calf can’t survive.
Juvenile whales got involved too, gently nudging the calf and keeping it close to its mother. The mother rested on her side, flippers extended, as helpers supported the calf’s weight. This cooperative effort continued for hours after the birth. And some of the helpers weren’t even related to the mother. They showed up and helped anyway.
Shane Gero’s team recorded sperm whale communication during the birth
The whales didn’t just cooperate physically—they communicated throughout the entire event. The underwater microphones deployed by the team picked up “coda” vocalizations, and researchers tracked how these vocal patterns shifted during key moments of the birth and its aftermath. When short-finned pilot whales swam near the group, the sperm whales’ vocalizations changed, suggesting they were actively coordinating to protect the newborn. Gero noted that the behavior leading up to the birth was itself unusual.
“These families are usually spread across kilometers as they dive and forage,” Gero said. “To have the entire family close together but not really active is kind of unusual.”
What sperm whale cooperation after birth teaches us
The cooperative birth behavior may reflect ancient evolutionary traits in toothed whales and provides evidence of complex social cooperation that goes beyond primates. The Project CETI team behind the research includes over 50 scientists across eight different disciplines. By synchronizing drone footage, underwater audio recordings and shipboard observations, they captured the birth and the whales’ cooperative behavior in unprecedented detail. David Gruber, CETI founder and president, spoke about what made the study stand apart.
“The Project CETI team, which consists of over 50 scientists across eight different disciplines, worked together to publish these studies,” Gruber said. Together the whale birth observations and dataset represent “an apex of complexity of sperm whale communication,” he said.
“What makes this study even more unique is that we have such detailed knowledge of each individual whale and their family relationships,” Gruber said.
But it was Gero who distilled the moment into something bigger. “In a cooperative society, if we’re going to succeed, we need to work together, rather than constantly finding reasons to define how we are different,” Gero said. “It’s a pretty great message to take away from an animal that is fundamentally different from us.”
Eleven whales, some of them strangers, gathering around a struggling newborn to keep it alive. No hesitation. No conditions.
Conversation
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