Arrive at the pier in Ushuaia to board your small motor vessel and set out on a leisurely 2.5 hour cruise of the Beagle Channel that flows past the port city of Ushuaia, an important body of water that offers sheltered sea passage to ships navigating round the tip of South America between Chile and Argentina. Look out for the many species of sea birds that hover over the Beagle Channel as you sail past Les Eclaireurs Lighthouse, an iconic red and white edifice, which is still in use today. There are numerous colonies of sealions that swim in the channel and live on Isla de Lobos and you may well see them bobbing about in the water around your boat. You may also spot cormorants and pilot whales before heading back to port.