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Unprecedented humpback whale gathering documented
Nature photographers Monique and Chris Fallows identified 304 individual humpback whales in one day off South Africa's west coast in December 2025, marking the largest single-day count of large whales ever recorded.
Sensory spectacle of a super-group
Monique Fallows described the experience as overwhelming. When hundreds of whales surface simultaneously, their blows-reaching up to 7 meters high-create a skyline-like effect. The sound resembles a powerful bellows, while the scent of fishy, pungent breath lingers in the air.
"You feel the whales' breath on you," Fallows said. "They burp and fart on a massive scale. It's an unforgettable sensory experience."
Conservation success and population rebound
Intensive 20th-century whaling reduced humpback populations to less than 5% of their pre-whaling numbers. However, a global moratorium enacted 40 years ago has allowed populations to recover, particularly in the Southern Hemisphere, where numbers have grown by up to 12% annually.
Marine biologist Simon Elwen from the University of Stellenbosch called the recovery "phenomenal," noting that super-group sightings off South Africa's coast surged from 10 in 2015 to 65 in 2020. "Seeing hundreds of whales in a day is now normal," he said.
Why are super-groups forming?
Super-groups-defined as gatherings of 20 or more whales within five body lengths of each other-have become increasingly common. Experts speculate that changes in prey availability, population growth, or newly discovered feeding strategies may explain the phenomenon.
During the austral summer, upwellings of nutrient-rich water trigger phytoplankton blooms, attracting krill, the whales' primary food source. This abundance likely draws the super-groups to feed.
"It's controlled chaos. They know exactly what they're doing."
Simon Elwen, Marine Biologist
Photographing a historic moment
Monique and Chris Fallows spent two days in December 2025 documenting the whales from their small boat. They photographed 208 individuals on December 29 and 304 the following day, later identifying 372 unique whales over the trip.
"We didn't set out to break a record," Chris Fallows said. "There were just so many whales that we didn't know what to photograph first. It was like rapid fire."
Ted Cheeseman, founder of the citizen science project Happywhale, confirmed that most of the whales were likely under 10 years old, indicating a thriving young population.
Ecological significance and ongoing threats
Humpback whales play a crucial role in marine ecosystems by transporting nutrients across oceans during their migrations, which can span up to 8,000 kilometers. Their recovery is a conservation success story, but threats like entanglement in fishing gear, vessel strikes, and climate change persist.
Despite the rebound, experts emphasize the need for continued protection. "More whales mean healthier oceans," said Jennifer Jackson, a marine ecologist at the British Antarctic Survey. "But we must address the challenges they still face."
What's next for humpback research?
Projects like Happywhale, which uses AI to identify individual whales from tail flukes, are helping scientists track population health and migration patterns. With nearly 1.5 million photographs in its database, the platform provides valuable data for conservation efforts.
Monique and Chris Fallows plan to return to South Africa's waters to further document what they call "the most incredible whale gathering on the planet."
