In recent years, the presence of southern right whales on the Buenos Aires coast has become an increasingly frequent phenomenon. From Mar del Plata to Monte Hermoso, passing through Miramar, Necochea or Claromecó, these marine giants surprise residents and tourists with appearances that were previously unusual.
This return is a result of a process of population recovery after decades of persecution. Indiscriminate hunting for centuries pushed the species to the brink of extinction. However, the international ban on hunting and the implementation of conservation measures in Argentina and neighboring countries marked a turning point.
Today, more than half a century later, the population shows signs of recovery and recolonizes areas of its historical distribution. The Buenos Aires coast, where sightings were scarce, is once again becoming an area used by juveniles and adults for socialization and reproduction.
Although this is great news, the situation is not without challenges. Population growth has slowed down in the last two decades, and new risks such as vessel collisions, pollution, underwater noise, and climate change threaten their future.
The southern right whale changed the landscape of the Buenos Aires coast with its presence. Photo: ICB.
A new scenario changing the landscape
The whales’ expansion towards areas close to ports and cities raises the need for additional measures. Conservation can no longer be limited to protected areas such as Península Valdés: it requires the integration of coastal municipalities, productive sectors, and local communities in a collective commitment.
Vessel collisions are one of the most serious risks. The implementation of alternative navigation routes, speed regulation in critical areas, and constant monitoring through satellite technology are necessary measures to reduce impacts.
Acoustic pollution and marine plastics also pose threats. Noise interferes with their communication and orientation, while waste compromises not only their health but also that of other species sharing the habitat.
An opportunity for coexistence
The whale watching from the Buenos Aires coast is a unique opportunity to strengthen environmental education and responsible tourism. Breakwaters, cliffs, and docks offer privileged spaces to observe without intruding on their environment.
The presence of these marine giants reminds us that the sea is a living ecosystem that requires respect. Ensuring their conservation not only secures the future of the southern right whale, but also the balance of the entire ocean, so crucial for humans.
The southern right whale changed the landscape of the Buenos Aires coast with its presence. Photo: ICB.
The importance of whales for the ecosystem
Whales play an essential role in the health of the ocean. Through their movements, they transport nutrients from deep waters to the surface, promoting the proliferation of phytoplankton, the basis of the marine food chain. This process, known as the “nutrient pump,” also contributes to the capture of carbon dioxide, mitigating climate change.
By feeding on krill and other small organisms, whales regulate the balance of their populations and maintain marine diversity. Even after their death, their bodies release nutrients that sustain entire communities at the seabed, a phenomenon known as “whale fall.”
Protecting these cetaceans, therefore, not only ensures the survival of an emblematic species but also strengthens the marine ecosystem’s resilience against the climate crisis. Observing them from the coast is not just a tourist privilege but an invitation to reflect on the role they play in the planet’s balance.
Source: Institute for Whale Conservation.
