The 62-passenger Crystal Esprit, the first yacht from this famed luxury line, spends winters at these Indian Ocean islands. Release baby turtles into the surf and admire the giant coco-de-mer palms.Aqua Expeditions' Aria Amazon sails through the Peruvian rain forest, with visits to indigenous villages and a chance to fish for piranha. Onboard, menus celebrate local fare with ceviche, river fish, and hearts of palm salad.Lounging on pillows stuffed with Egyptian cotton on the top deck of Nour El Nil's Meroë, you'll feel like a modern-day pharaoh as you journey past date palms, ibis, and the temples at Edfu and Kom Ombo.The orchid-adorned 68-passenger Scenic Spirit launched last year with every cabin a one-bedroom balcony suite. On land, tour the monastery in the old Cambodian capital of Oudong and receive a monk's blessing.Since most of the crew of Island Windjammer's 26-passenger Vela are from the islands, you'll get super local suggestions for bars and shops. One St. Lucia favorite: the Fish Friday street party in Rodney Bay.The Paul Gauguin was built with a shallow draft for navigating Polynesian lagoons. The line invites local singers and dancers to perform and offers spa treatments that use monoi oil, made from local tiare flowers.After a day touring Tallinn or seeing a private performance at the Royal Swedish Opera in Stockholm, you can head to the Viking Sky's onboard Scandinavian-style spa for a steamy sauna followed by a visit to the snow room.The three-masted Le Ponant visits a variety of small western Mediterranean ports and locations along the Corsican coast. Onboard, toast new friends with flutes of Veuve Clicquot paired with Ladurée macarons.Half cruise ship, half freighter, the Aranui 5 spotlights its friendly local crew on its 14-day voyage to this remote South Pacific archipelago. They share family stories while leading trips to ancient tiki sites and tropical gardens.The Cunard Line's flagship, Queen Mary 2 — built with a special hull for greater speed — immerses you in British culture. As you 'cross the pond,' hit the Golden Lion Pub for trivia night, pints, and fish-and-chips.See the full list here.