Fin whales (Balaenoptera physalus) can be found worldwide, in oceanic waters, though are rarely found in coastal areas of wide and shallow continental platforms such as those in the western South Atlantic Ocean. Here we report the first confirmed stranding of a B. physalus off the Atlantic coast of Tierra del Fuego (TDF), in July (austral winter) of 2016. In addition, a bibliographic review of the strandings of this species was carried out on the Argentinian coasts and especially on TDF. The animal was fresh when it was found and may have been alive at the moment of the stranding. The specimen was a physically immature female with a total length 15.8 m. No injuries or fishing gear were observed to suggest accidental entanglement or vessel collision. The specimen’s stomachs were empty except for a low-grade infestation with the trematode Ogmogaster antarcticus, but without any associated macroscopic gastric pathology. Although the necropsy was carried out within a few hours of death, we could not make an accurate diagnosis of the cause of death. However, the insufficient fat deposits indicate a bad physical condition and may have contributed to its stranding and subsequent death. This specimen represents the first confirmed stranding of this species in TDF.

长须鲸 ( Balaenoptera physalus ) 可以在世界各地的海洋水域中找到，但很少在宽阔和浅的大陆平台的沿海地区（例如南大西洋西部的那些平台）中找到。在这里，我们报告了第一次确认的B. physalus搁浅2016 年 7 月（南极冬季）在火地岛 (TDF) 大西洋沿岸附近。此外，在阿根廷海岸，尤其是 TDF 上对该物种的搁浅进行了书目审查。这只动物在被发现时是新鲜的，在搁浅时可能还活着。标本是一名体格不成熟的女性，全长15.8 m。没有观察到伤害或渔具表明意外缠结或船只碰撞。标本的胃是空的，除了被吸虫Ogmogaster antarcticus 轻度感染，但没有任何相关的肉眼可见的胃病理。虽然尸检是在死后几小时内进行的，但我们无法准确诊断死因。然而，脂肪沉积不足表明身体状况不佳，并可能导致其搁浅和随后的死亡。该标本代表了该物种在 TDF 中的首次确认搁浅。