Blue and Fin Whales Increase in Southeast Atlantic After Whaling Decline

More than four decades after commercial whaling ceased, new research indicates a recent uptick in sightings of the world’s two largest whale species in the southeastern Atlantic. The study, published in the *African Journal of Marine Science*, analysed over six decades of confirmed sightings and strandings along Namibia and South Africa’s west coast, revealing that while overall numbers remain low, the frequency of observations has risen sharply in recent years.

The data show that 95 % of all recorded sightings of both blue and fin whales occurred since 2012, marking a significant shift from earlier decades when such encounters were rare. The authors compiled a comprehensive database of sightings and strandings, noting that the increase is concentrated in the last decade and appears to be consistent across both species. Although the absolute population sizes are still uncertain, the trend suggests that these whales are becoming more visible in the region’s waters.

The findings underscore the importance of continued monitoring and conservation efforts in the southeastern Atlantic. As the study highlights a measurable change in whale presence, marine authorities and researchers are urged to maintain and expand surveillance programs to better understand the drivers behind this resurgence and to ensure the long‑term protection of these iconic marine mammals.