In the hottest months of the year, Isla Martillo is the home of 2 species of penguins, Papúa and Magallánico. They come to reproduce, and the youngest ones to change their plumage. These young penguins are rather ugly and have missing feathers. The island is full of nests, which are holes in the sand surrounded by plants. I had never thought I could see so many penguins on a landscape like this.
It is pretty cool to get close to these animals, they stare at you very curious. We must move slowly and crouch to go closer, otherwise they might get scared. And it takes only one to make the colony run away. I was so excited taking pictures that I threw myself on the ground, and only a few moments later I realized there was poop everywhere. I smelled really bad and stayed like this for hours until I returned to the hotel.
The ones with reddish orange bill (Papúa) stood still, blinking and not minding our presence.
Isla Martillo is 56 miles from Ushuaia on ruta 3, you should buy the tour in a travel agency. One option is to catch a boat in Ushuaia, pass by some islands and arrive in Isla Martillo without getting off. Another possibility is to do what I did: I went to the nearest port and caught a motorboat; it took only 15 minutes.
Agency: PIRATOUR is the only one allowed to land on the island, and they operate in a small house on the coast next to Oficina de Turismo. All these small houses sell tours.