Jonassen Island

It was first named Irizar Island by Otto Nordenskiöld in honor of the Argentine captain whose ship Uruguay rescued the Swedish Antarctic Expedition in 1903 after their ship Antarctic had been crushed by ice.

[3] The main life form on the island are gentoo penguins and kelp gulls.

Adélie and chinstrap penguins as well as pintado and snow petrels have been observed around or flying about the island.

A 1901 observation listed the Adélie as having nested on the island; the claim has not been substantiated in modern surveys.

This Joinville Island group location article is a stub.