Doctor Natalia Dellabianca, a biologist and researcher at the Southern Center for Scientific Research (CADIC-CONICET), confirmed an encouraging phenomenon: the increasing presence of whales in the Beagle Channel, south of Tierra del Fuego.
This pattern, not seen in past decades, would be a consequence of the slow recovery of populations after the cessation of commercial whaling.
“It is believed that many whale species are recolonizing old feeding or breeding sites,” Dellabianca pointed out, also highlighting that, in ancient times of indigenous peoples, whales used to frequent this area. However, the hunting pressure drastically reduced their numbers throughout the southern hemisphere.
Humpback and sei whales: the most frequent in the Beagle Channel
Among the species most frequently observed are the humpback whales, which began to be more regularly recorded a decade ago. Thanks to their individual identification, scientists have noticed that some return each season and stay longer in the area.
Seasonal presence of sei whales has also been reported, especially in Cabo San Pío, Isla Martillo, Lapataia, and areas near Ushuaia, during certain months of the year.
Responsible sightings: how to act in the presence of cetaceans
The researcher provided a series of recommendations to ensure respectful coexistence between people and marine mammals:
- Minimum distance of 100 meters for boats and kayaks
- Reduce speed to no more than 4 knots when approaching, especially for sailboats
- Do not touch or interfere with the animal’s behavior if it approaches willingly
- Move away if the animal suddenly changes course, makes long dives, or tail slaps, signs of discomfort
“Many times the animal may not notice human presence because it is focused on feeding or fleeing from orcas. That’s why it is crucial not to disrupt their natural behavior,” Dellabianca emphasized.
A silent return that calls for caution
The return of whales to the Beagle Channel is a hopeful sign of ecological resilience, but also poses new challenges in tourism and navigation management in one of the most transited southern channels on the continent.
Promoting responsible practices based on science will be crucial for this recovery to continue.
