A single group of 100 humpback whales was recently seen swimming together off the coast of South Africa. That is not normal. Scientists call these gatherings superpods, and they are happening more often than they used to.
Sightings triple in just five years
Researchers from South Africa's Department of Forestry, Fisheries and the Environment have been tracking the trend. In 2021, they recorded 11 superpod sightings. By 2025, that number had jumped to 33. The data comes from boat based surveys and aerial counts along the country's coastline.
A superpod means at least 20 whales traveling together. Some recent groups have been far larger. The 100 whale superpod was spotted near the town of Hermanus, a popular whale watching destination about 100 kilometers east of Cape Town. Another group of 80 whales was seen near the Cape Peninsula.
Why the whales are changing their habits
The humpbacks are migrating from their feeding grounds near Antarctica to breeding areas off the coast of Africa. That journey is not new. What has changed is how they travel. Instead of spreading out in small pods, they are now gathering in huge numbers.
Marine biologists believe the shift is linked to changes in the ocean. Krill, the tiny shrimp like creatures that humpbacks eat, may be clustering differently because of shifting water temperatures. The whales follow the food. When krill concentrates in one area, the whales do too.
What this means for local communities
For people in coastal towns like Hermanus, the superpods are a major draw. Whale watching is a key part of the local tourism economy. More whales mean more visitors. But the increase also raises questions about boat traffic and how close vessels should get to the animals.
South Africa has strict rules for approaching whales. Boats must stay at least 300 meters away. Even so, a superpod of 100 whales is hard to miss and harder to navigate around. Officials are watching the situation closely.
The rise in superpod sightings is not just a local curiosity. It is a signal from the ocean that something is shifting. Humpback populations have recovered significantly since commercial whaling was banned. But their new behavior suggests they are adapting to a changing environment in ways scientists are still working to understand.
