Seabourn is famous for its small-ship luxury cruises, and Seabourn Expeditions, the company's expedition line, is no exception. Seabourn Venture and Seabourn Pursuit are both staffed with expert scientists, scholars, naturalists, and guides. Activities include hiking, snorkeling, scuba diving, and Zodiac cruising. Both vessels also offer custom-built submarines. Seabourn Expeditions currently sails to Antarctica, South America, the Arctic, and the Amazon.

Viking Expeditions features two new 378-passenger vessels, Viking Octantis and Viking Polaris, both of which are suitable for river and ocean voyages. All staterooms offer balconies and elegant, Scandinavian-inspired interiors that are sure to wow. Guests also gain access to the use of waterproof pants, boots, and Viking excursion gear. Onboard, you'll find an experienced team of scientists and expedition guides to help you make the most of your sailing to Antarctica, the Arctic, or the Great Lakes. 

Atlas Ocean Voyages is the latest luxury expedition line taking the cruise industry by storm. The line boasts five state-of-the-art ships (three of which have yet to debut; World Navigator and World Traveller are the only ones that are currently sailing). Each 423-foot-long vessel is constructed with a 1B-Ice Class-certified hull and features 18 custom-designed Zodiac MilPro Mark V inflatable boats to ferry passengers ashore to the world's most remote destinations. Expect high-end amenities, exhilarating excursions, and inclusive fares.

If you partner with the National Geographic Society, like this line does, you’d better deliver adventure, right? Lindblad does, though don’t expect anything too extreme. These nature- and culture-focused cruises are the floating equivalent to “glamping” — they’re comfortable and not too challenging while still making your feel like you’ve explored the Great Outdoors. Read our full review.

Celebrity has some of the most beautiful and best-designed ships in the industry, and that carries through to the line's fleet of expedition vessels. Specially designed to explore the Galapagos Islands, and other off-the-beaten-path destinations, Celebrity's intimate ships allow you to visit hard-to-reach ports without sparing its luxurious onboard amenities. Read our full review.

Silversea Cruises takes guests on all-inclusive voyages to all seven continents with a stunning fleet of luxury cruise ships. The traditional fleet encompasses small-ship luxury cruises and expedition ships that are specifically designed for exploring more remote regions. Read our full review.

Hurtigruten is a household name in Norway, having run coastal ferry services since 1893. Today, its focus is on nature-heavy expedition cruises. The cruise line boasts an impressive fleet of small and mid-size ships. Read our full review.

This French-owned, luxury yacht brand provides all the panache you would expect from la Francaise. The crowd is chic (and mostly French), the décor mixes breezy whites with crystalline accents, and the culinary temptation is constant. Read our full review.

Scenic, one of the leading river cruise lines in Europe, launched their first ocean and expedition ship, Scenic Eclipse back in 2018. Designed with two helicopters, a seven-seat submarine, five restaurants, a movie theater, a deck-top teppanyaki grill, and a 5,000-square-foot spa, this one-of-a-kind vessel ship sails to bucket-list-worthy destinations like Alaska, Japan, and Antarctica. Read our full review.