Poseidon Expeditions have been operating expedition cruises to Antarctica since 2014, having been working in Arctic waters since 1991. Throughout this they have always remained relentlessly focussed on offering an ‘old school’ polar cruise experience, with traditional small ships and the maximum time exploring wild places away from the vessel.

Swoop has been working with Poseidon Expeditions for many years, forming a long and trusting partnership centred on offering Antarctic nature and wilderness cruising experiences of the classic style.

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Swoop says

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We love working with Poseidon Expeditions because they stayed true to their roots, concentrating on the classic expedition cruises that first got us into business in the first place – delivering top polar quality to our guests voyage after voyage.

Otto Lock Antarctica Specialist

Who are Poseidon Expeditions?

Poseidon Expeditions were founded in the UK in 1999, running expedition cruises to the Arctic using Russian icebreakers. They led their first Antarctic cruise in 2014, and have continued to operate successfully in southern polar waters since then.

Poseidon describe themselves as operating ‘old school’ expedition cruising. They operate just one ship in Antarctica, the Sea Spirit, which is a classic polar ship with traditional maritime stylings that’s small and highly manoeuvrable. Capped at just over 100 berth, it’s quick to disembark every guest into zodiacs to allow them to spend the maximum time off the ship amid the Antarctic scenery and wildlife.

Poseidon Expeditions logo

Why Swoop loves working with Poseidon Expeditions

  • Swoop’s close working relationship with Poseidon Expedition is grounded in their more than three decades of working in harsh polar environments: we know their deep experience means that they’ll always deliver for our guests.
  • Poseidon Expeditions’ concentration on its core product honed over many years, gives travellers a trusted classic Antarctic experience, with the maximum time spent exploring off the ship.
  • Poseidon Expeditions squeeze every available moment out of the Antarctic season to offer an excellent choice of dates and itineraries, making it easy to find the best departure for our travellers. 
  • Our guests with a love of maritime tradition are always delighted with the Sea Spirit's classic profile and the wood and brass styling in its interiors.
  • With a cap of just 114 guests, Sea Spirit has a very cosy atmosphere, while its size means that it’s not just nimble, but quick to disembark all passengers for Antarctic landings and zodiac cruises.
  • Poseidon Expeditions are the only expedition cruise company to consistently offer South Georgia and Falkland Island only itineraries, making them a great choice for birdwatchers.
  • Kayaking and camping are standard optional adventure activities on all Poseidon Expeditions departures.

What Swoop travellers think of Poseidon Expeditions

Poseidon Expeditions trips scored 4.4/5 from 48 reviews

Very comfortable ship, great, greater than great - staff were 10 out of 10.

Travelled: November 2025

Ruben Schwarzkopf - Singapore

All was really good and the crew could not do more. The cabin was as expected and always kept clean and tidy. A great variety of food, well presented and with not too much ceremony.

Travelled: November 2025

Philip Tilley - UK

The size of the ship was perfect, it was easy to get everyone off for excursions. The food was great, so many options, it was amazing they managed to get it all together 3 times a day. Read the full review

Travelled: November 2024

Donna Rainford - USA

Sea Spirit was charming and perfect size with a personal touch. Good food and service. Read the full review

Travelled: October 2024

Susan Smith - Falkland Islands (Malvinas)

Great crew and staff of the Sea Spirit and the fantastic food!!! An incredible trip!!! Read the full review

Travelled: February 2024

Doug Pemberton - Canada

Service, food, captain, amenities… all exceeded my expectations. On-ship prices were reasonable and there was even enough wifi to enjoy a little internet! Read the full review

Travelled: January 2024

Anne Kinzie - Canada

Nice solid ship. Great team. Very personable and knowledgeable. Read the full review

Travelled: January 2024

Derek Smithee - USA

Go with a small ship like Sea Spirit! They were fantastic from embarkation to disembarkation. Read the full review

Travelled: December 2023

Greg Lewbart - USA

Great little ship. Very cosy and stable. Read the full review

Travelled: December 2023

Allen Cannedy - USA

Ship was small but sturdy and Captain and crew were excellent. Read the full review

Travelled: December 2023

Adam Ford - USA

Great crew/staff, outstanding service on all levels, personal attention, lovely cabin kept absolutely spotless. The only negatives were the food and the entertainment - given the stellar level of all other staff, this aspect was underwhelming. I would choose this ship again. Read the full review

Travelled: December 2023

Kristie Mozzachio - USA

10/10 - The ship, expedition leaders and everything we saw was wonderful. Read the full review

Travelled: February 2023

Tara Kacmarcik - USA

The Sea Spirit is a wonderful ship. Our cabin on Deck 5 was spacious and comfortable. It was easy to get around on the boat and we took advantage of the comfortable and extensive library quite often on sailing days. The food was excellent as there was always a wide variety of offerings for each meal and an amazing range of options throughout the whole trip. Read the full review

Travelled: February 2023

Donna Potaczek - USA

I cannot see how anything could beat the Sea Spirit and the service and food on it. Read the full review

Travelled: January 2023

Stuart Prey - USA

The small ship size of the Sea Spirit allowed all to get to know one another. The expedition staff was exceptional: highly trained, intelligent, professional, safety minded and caring. Read the full review

Travelled: February 2022

Ron Hart - USA

The expedition staff were all very good at their jobs and ensured we had plenty of safe and informative landings. Read the full review

Travelled: February 2022

Graham Collins - Canada

Our staff and the crew on the ship were absolutely 'top-notch'. The accommodation aboard the Spirit of Enderby was just right. Read the full review

Travelled: February 2019

Sarah Ross - United States Of America

Sea Spirit - what a plucky little ship! She carried us in comfortable luxury whilst still being small enough to provide an intimate experience. Both the crew and expedition teams worked tirelessly to ensure we had the time of our lives.

Travelled: February 2016

Isla - UK

Customer Image

The Sea Spirit is a beautiful ship and feels very luxurious. The ship and hotel staff were attentive and friendly and as for the food, well it was simply divine! The expedition crew were super friendly, incredibly talented, knowledgeable and inspiring. Our fellow passengers were diverse and we’ve made lots of new friends who we will forever share a special bond with.

Travelled: December 2015

Phil & Mickey - Australia

Poseidon Expeditions' ships

Sea Spirit ship

Sea Spirit

The Sea Spirit offers elegant style and spacious cabins for her 114 guests to travel in comfort at an affordable price.

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Swoop's trips with Poseidon Expeditions

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