Located on the banks of the Loire river, across from the Musée Jules Verne, the Carrousel des Mondes Marins seems to have been born in the belly of Île de Nantes, the city’s most maritime spot.

Adults and children are plunged into the same imaginary universe of this incredible mechanical aquarium, which you can discover at your own pace.

This authentic 360° theatre is also an incredible sculpture dedicated to the sea.  Visitors watch as strange and disturbing marine creatures revolve in a huge structure built on three levels. You will discover the sea like never before, from seabeds to sea surface.

This giant carousel, almost 25 m (82 ft.) high and 22 m (72 ft.) in diameter, is a reinvention of fairground art. Three carousels are stacked in concrete lacework, crowned by a Big Top that is itself adorned with pediments, and guarded by 16 fishermen from all the world’s oceans.

In the seabeds, discover the Giant Crab, the Reverse Propulsion Squid, the  exploring Machine that dives deep into the machine room, or the Bathyscaphe that climbs up the central mast… and the latest arrival: the Box Fish. A total of 14 elements fixed onto a rotating plateau.

In the abyss, on the second level, 6 elements hang 5 metres above the seabeds: the Deep-Sea Lanternfish, the Manta Ray or the Pirate fish… Only visitors over 1m35 (4.5 ft.) are accepted aboard this level.

On the sea surface, on the third level, a rotating plateau, protected by a Big Top, sweeps away boats, marine harnesses and other flying Fish, a storm Boat, Nutshells and Jellyfish, in a raging whirlpool of 24 big mechanical waves.

Dive into the magic universe and the poetics of the Marine Worlds Carousel in video and music. Video produced by Nantes Métropole, realized by Dominique Deluze. Music: Mino Malan.


  • Diameter: 22m
  • Height: 25m
  • Number of elements: 35
  • Number of seats: 85
  • Maximum capacity: 300 people
  • Access to the elements: Adults, children and people with reduced mobility
  • 2 operating procedures: Fairground mode with boarding of the public in the elements or Discovery mode with mediation and no possibility to board in the elements.

Logo no strollerPlaypen stroller and baby carrier are available                                                                  

Dogs not authorized except guide dogsExcept guide dogs 

Accessible to disabled Marine Worlds Carousel is accessible In the Fairground mode: 2 accessible elements (people with reduced mobility)

Located on the banks of the Loire River, the Carrousel des Mondes Marins is subject to bad weather, as all fairground merry-go-rounds. The timetable for opening depends on weather conditions. In case of heavy rains or of winds blowing up to 28 mph, the Carrousel is closed.

Apart from thunderstorms or sudden precipitations with strong winds, the decisions to close in the morning or in the afternoon or for two hours will be anticipated depending on weather forecast and on how the situation develops.

Tea Award


Le Carrousel des Mondes Marins -  © Jean-Dominique Billaud Le Carrousel des Mondes Marins -  © Jean-Dominique Billaud Le Carrousel des Mondes Marins -  © Jean-Dominique Billaud Marine Worlds Carousel - © Jean-Dominique Billaud Le Carrousel des Mondes Marins -  © Jean-Dominique Billaud



From 4€ to 8,50€

Each ticket gives access to the workshop of the company La Machine and the Prototype Branch.

With the full rate Carrousel ticket, 1,60 € discount at the Galerie (with a 48 hours validity period).

  • Nantes Métropole - Communauté Urbaine
  • Crédit Mutuel
  • Harmonie Mutuelle
  • Ardissa