A Haven for Wildlife

The deep, nutrient-rich waters and sheltered nature of the strait create an ideal environment for wildlife. Known as the "Humpback Highway," the Gerlache Strait is teeming with life, particularly during the austral summer (November to March). Its rich ecosystem, fueled by krill (Euphasia superba) swarms, makes it a prime feeding ground for a wide variety of marine animals…especially Humpback whales!

Humpback whales (Megaptera novaengliae) are the most common sighting, often seen lunge-feeding on krill. These incredible and gentle giants arrive in Antarctica after a long migration (sometimes more than 8000 km / 5000 miles!) from warm waters near the Equator, to feed on blooming krill and raise their calves. They can be spotted feeding, sleeping on the surface (“logging”) or just playing and relaxing in the calm waters of the strait.

Orcas -killer whales- (Orcinus orca) also frequent these waters, sometimes approaching vessels, while Minke whales (Balaenoptera bonaerensis) are occasionally spotted.

The coastal beaches are home to large colonies of Gentoo and Adélie penguins that also “cruise” the Gerlache Strait on ice floes, together with seals, including Weddell, Leopard, and Crabeater seals, often seen resting on icebergs.