Linking two ends of a South American loop, a string of lakeland vistas dovetails with shorelines crowded with Patagonian penguins. They'll set the mood for this nature trail to the White Continent where you'll soon become familiar with gentoo, chinstrap and assorted Adelie varieties. Along with landings ashore, you'll sail majestic 'Iceberg Alley', on the lookout for graceful Minke whale flukes.