{{{annotations}}} Seno Otway is a large inland sound lying between Brunswick Peninsula and Riesco Island in southern Chile.
Alternatively called Otway Sound, this natural waterway occupies a valley blocked by a large terminal moraine left by the retreat of a glacier during the last glacial period.
[1] In spite of being located east of the Andes, it is connected to the open Pacific Ocean through the Strait of Magellan via a narrow passage, which cuts into the Andean Massif.
There are a variety of marine species within the Otway Sound, as well as along the coastal terrestrial and intertidal zones.
Notably there is a moderately large colony of the Magellanic penguin along the coast of the Seno Otway.