Southern Africa: Sightings of Blue and Fin Whales Increase in South-East Atlantic
Research led by the University of Cape Town’s Centre for Statistics in Ecology, Environment and Conservation found increased sightings of Antarctic blue and fin whales in the southeastern Atlantic, suggesting slow recovery from industrial whaling. The study analyzed over 60 years of data from Namibia and South Africa’s West Coast, noting rare but rising encounters despite ongoing threats like ship strikes and pollution.
A study by the University of Cape Town’s Centre for Statistics in Ecology, Environment and Conservation revealed a rise in sightings of Antarctic blue and fin whales in the southeastern Atlantic. Researchers compiled 60 years of verified sightings and strandings from Namibia and South Africa’s West Coast, published in the *African Journal of Marine Science*, showing gradual recovery after near-extinction due to 20th-century whaling. Blue whales, critically endangered with populations at 3% of pre-whaling levels, grew at 5-8% annually, while fin whales, classified as vulnerable, recovered to over 30% of historical numbers at 4-5% annual growth. Data from 1964 to March 2025 in the Benguela upwelling ecosystem showed 12 blue whale sightings (mostly spring-autumn) and 76 fin whale sightings year-round, suggesting reoccupation of historical ranges. Lead author Dr. Bridget James noted the southeast Atlantic may have been a key nursery area, though limited data previously obscured recent trends. Co-author Dr. Simon Elwen, director of Sea Search, attributed the increase to recovery and expanded observation efforts. However, threats like ship strikes, fishing gear entanglement, and climate change persist, delaying full population restoration. The study highlights the need for sustained conservation despite progress. Blue whales remain critically endangered, while fin whales show slower but steady recovery. Researchers urge continued monitoring and protection to support long-term survival in the region.
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