Cruise editor Marc Shoffman selects some of the best sailings to do in your lifetime

Many keen travellers have compiled a bucket list of trips or natural wonders to experience, and a cruise can be an ideal way to tick-off off your dream destinations.

From gazing upon towering icebergs in Alaska to spotting the giant tortoise of the Galapagos, a cruise can provide unique access to plenty of natural wonder around the world, while ships also often offer the best conditions to see wonders like the northern lights or an unrivalled way to travel across the Atlantic without worrying about the jet lag.

Whatever your interests, from immersing yourself in nature to circumnavigating the globe, there are a variety of cruises that provide once-in-a-lifetime trip.

Some may be cold cruises as far as the Antarctic, or there are relatively warmer experiences in the Amazon or Galapagos Islands.

There are itineraries to suit all sorts of budgets, from cruises that are all about enjoying the journey aboard immersive ships with memorable excursions, to expedition-focused vessels that aim to bring out your sense of adventure and discovery.

Here is our pick of the top cruises to help tick off your travel bucket list.

Sit back and relax over several sea days as you sail across the Atlantic, with nothing to worry about other than the finding the best sunbed to take in the views or which activities to pick from the daily planner.

A transatlantic cruise, typically between Southampton and New York or vice-versa often has a few or no stops, giving you a week or more just to enjoy the ship and sea life.

An iconic ship sailing this route is Cunard's Queen Mary 2.

Guests can get a taste of old-school luxury cruising, including white-gloved afternoon teas and ballroom dancing while exploring the 8,000 books in the largest library at sea, as well as watching Royal Shakespeare productions or the English National Ballet.

Plus, you can even bring your pet on transatlantic journeys to stay in the onboard kennels.

Follow in the footsteps of Charles Darwin from the comfort of an expedition cruise ship.

A Galapagos Island cruise gets you up close to the incredible wildlife and natural history of the Galapagos islands.

With Lindblad Expeditions, this sailing starts in Quito where you fill fly to Baltra Island for a 10-day journey of discovery to meet giant tortoises, blue-footed boobies, playful penguins and sea-lions, among others.

There will be onboard experts to guide you around the region as well as chances to drop anchor and meet the marine life underwater in the crystal clear waters.

A world cruise saves the hassle of airport check-ins and constantly packing and unpacking as you travel across continents.

You only need to empty your suitcase once and you will be ready to explore the world on cruises that range from three to six months.

Guests can visit 38 countries over 155 nights on Azamara's World Cruise departing from Miami and finishing in Barcelona.

The itinerary includes late stays in port and stops at bucket list destinations such as Easter Island and Great Barrier Reef. Tips, wifi and weekly laundry are also included.

Sailing with luxury brand Seabourn around the Brazilian portion of the renowned river, onboard guides will host expert talks about the rainforest and will help point out the local wildlife.

There will also be rainforest walks and chances to explore deeper into the region via zodiac or to kayak on the water.

This cruise even sails across the equator, which includes an initiation ceremony for those crossing for the first time.

The spectacle, known as aurora borealis, is best seen from remote locations around Norway, the Arctic, Iceland and Alaska.

The ideal conditions are clear dark skies, free from light pollution, making a cruise the best viewing platform from the middle of the ocean.

You will explore the towering cliffs and cascading waterfalls of the Norwegian fjords. Cities you'll visit by day include Alesund, Bodo and Stavanger, and you'll look out for the northern lights by night. There is also an opportunity to meet the local Arctic Sámi community in Narvik.

Fred Olsen has Norwegian heritage dating back to 1848 so its trained captains will know where to look for the northern lights in the region. Plus, the sailing also features talks from resident astronomers.

Alaska offers a feast for the eyes, with snow-capped mountains and giant glaciers. You can visit these natural marvels on a cruise where you may even be lucky enough to spot a whale in the water or eagles flying overhead. Guests can also take part in unique excursions such as gold panning and axe throwing.

Get closer to the ice on Princess Cruises' 14-day Voyage of the Glaciers, which sails through the Glacier Bay National Park and by the Hubbard Glacier.

Sailing aboard Discovery Princess, you can get a great view of the scenery from the large windows of its 14 bars and lounges, and there are top dining venues including the Catch By Rudi seafood restaurant and the Princess360 immersive dining experience.

Experience the planet's last untouched continent on an Antarctic cruise, which is a great way to immerse yourself in the scenery, even from the comfort of your cabin.

There will be chances to explore the ice and take part in guided tours where you may come across penguins and whales or even take part in polar plunges.

Passengers can experience a six-day roundtrip with Silversea from King George Island around the Antarctic Sound, which is known as the end of the world, where you will see icebergs floating alongside the ship.

Excursions include guided hikes and zodiac cruises that aim to get you closer to the wildlife.

7 of the best cruises to tick off your travel bucket list