Rare Video Shows Sperm Whales Cooperating During Birth in Caribbean Waters

Researchers captured extraordinary footage of female sperm whales from different families working together to help deliver and protect a newborn calf. The 30-minute birth process showed unprecedented cooperation among the marine mammals, with whales taking turns supporting the baby above water for hours until it could swim independently.

Extraordinary underwater footage has given marine biologists an unprecedented look at how sperm whales collaborate during one of nature’s most critical moments – the birth of a calf.

The remarkable video, recorded in 2023, documents female sperm whales from separate family groups joining forces to assist during labor and help lift the newborn above the surface. This type of cooperative behavior is exceptionally rare among animals, typically seen only in primates such as humans and monkeys.

“The group quite literally helps bring the calf into the world,” said Oregon State University behavioral ecologist Mauricio Cantor in an email. He had no role in the new research.

Understanding whale social behavior and cooperation in their natural habitat has long challenged scientists, since these massive creatures spend the majority of their lives beneath the ocean’s surface. Over the past six decades, researchers have documented only a few sperm whale births, all through informal observations or historical whaling vessel records.

The discovery happened when scientists studying whale communication near the Caribbean island of Dominica witnessed unusual activity. Eleven whales – predominantly females – emerged at the surface with their heads pointed toward each other, engaging in intense splashing and diving movements both above and below the waterline. Researchers quickly deployed drones and recording equipment to document the event.

The complete birthing process lasted approximately 30 minutes. Following the delivery, pairs of adult whales continued supporting the infant at the surface for several hours until the calf developed the strength to swim on its own.

“This was just really a special event,” said study co-author David Gruber with the Cetacean Translation Initiative, or Project CETI.

Following their observations, the research team developed specialized software to examine the details of what occurred. Their findings were documented in two separate studies released Thursday in the journals Scientific Reports and Science.

Researchers were particularly impressed by how numerous adult females – including mothers, sisters, and daughters – came together to protect the newborn, even including whales with no family connection. Sperm whales organize themselves in tight-knit, matriarchal communities, and these new findings demonstrate how those social structures remain strong during the species’ most critical and defenseless periods.

“It’s amazing to think about how, when faced with this impossible challenge, these animals come together to succeed,” said study co-author Shane Gero, also with Project CETI.

The research team also documented that the whales produced distinct vocalizations during important phases of the birth, including extended, slower sequences of clicking sounds. These acoustic signals may have facilitated communication among the group, allowing the animals to coordinate their assistance during the birthing process.

The discoveries raise numerous new questions for future research. Scientists wonder how the whale group initially assembled and what signals prompted them to participate in the collaborative effort.

Finding answers to these questions remains challenging given how difficult it is to obtain video documentation of these events. However, the current research provides valuable insights into the complex communication patterns of these marine mammals.

“I think it’s just exciting to think about the social lives of these animals,” said biologist Susan Parks with Syracuse University, who wasn’t involved with the new studies.