Start the tour in the local tourist dock and board a modern and comfortable boat. Set sail and cross the wide Ushuaia Bay until you reach the Beagle Channel through Paso Chico. Then, navigate around the Bird's Island where you can appreciate species of the Tierra del Fuego's seabirds such as skuas, black-browed albatross, steam ducks, cauquenes, cook seagulls, and gray seagulls. After that, reach Sea Lion Island which also belongs to the Bridges Archipelago and is inhabited by 2 different species of sea lion. Arrive at the Les Eclaireurs (The Illuminators) Lighthouse where you will find imperial and rocky cormorants colonies. Hear the story of the collapse of the SS Monte Cervantes in 1930. Next, continue sailing East into the wonderful landscapes of the Beagle Channel surrounded by stunning mountain ranges. Admire both Puerto Almanza on the Argentina coast and the Puerto Williams Naval Base on the Chilean coast. After that, head onwards to Martillo Island, also known as Penguin Island where you will have the opportunity to observe a colony of Magellanic and Papua penguins in their natural habitat. Make the return journey back to the dock, where your tour will end. 

Join this active excursion to take part in the most comprehensive day tour of Tierra del Fuego. In addition to Gable Island, visit the Harberton Ranch and the penguin colony on Martillo Island. Leave Ushuaia toward the east until you arrive at Lasifashaj River. There, preparations will begin to paddle inflatable canoes along the river and the Beagle Channel. You will be provided with rubber boots, trousers, and life jackets to paddle downstream and to the sea in the Beagle Channel. At the sea, you will see wildlife, including a variety of seabirds and maybe even some sea lions. Then, arrive at the Harberton Ranch and take a motorboat towards the Isla Martillo. From the boat, you can see penguins at their breeding site. Continue on your motorboat to the main attraction of the day, the huge Gable Island, where a hot lunch awaits you with Patagonian wine, soft drinks, and mineral water. Next, hike to explore this wonderful island along beaver dams, through the forest, and along the marine coast until you reach the boat that will take you back to Puerto Harberton. Then, take the bus to Ushuaia.