[1] Boats of the DisneySea Transit Steamer Line ferry passengers between Mediterranean Harbor and American Waterfront near the park entrance to Lost River Delta.

[11] Mediterranean Harbor is the entrance "port-of-call" and themed as an Italian port city, with Venetian Gondolas that guests can board and ride.

Mysterious Island is a "port-of-call" within Mount Prometheus, the giant volcano that serves as the park's centerpiece and most prominent feature.

It relies heavily on the storytelling of Jules Verne and, specifically, the mythology of the volcano fortress mentioned several times in the books called "Vulcania".

Attractions include Flounder's Flying Fish Coaster; Scuttle's Scooters; Jumpin' Jellyfish; Blowfish Balloon Race; The Whirlpool; all of which are children's rides.

Also in this area are Ariel's Playground, which is a children's playground and extensive walk-through attraction that recreates the various settings in the movie; and the Mermaid Lagoon Theater, which formerly houses King Triton's Concert, a musical show featuring live actors, large-scale puppetry and Audio-Animatronics that recreate the story of The Little Mermaid.

There are five attractions in the land: Sindbad's Storybook Voyage, an indoor dark ride boat ride whose art direction seems to be (at first glance) a variation on "It's a Small World" (with its own theme song, "Compass of your Heart", composed by Alan Menken); Caravan Carousel, a double-decker carousel that holds over 190 passengers; Jasmine's Flying Carpets; and the Magic Lamp Theater, which houses a combined live-action/animatronic based magic show with a 3D movie featuring the Genie.

Located at the rear of the park, the dominant structure in this "port of call" is the ruins of an ancient Mayan pyramid which houses the dark thrill ride, Indiana Jones Adventure: Temple of the Crystal Skull.

Furthermore, the Lost River Delta contains an Intamin roller coaster named Raging Spirits, which opened in 2005 and is similar to Indiana Jones et le Temple du Péril at Disneyland Park in Paris.

This "port of call" is home to the fictional 'Marine Life Institute' and is themed in a retrofuturistic style; Port Discovery houses two attractions: Aquatopia, a boat ride that uses LPS tracking (the 'trackless' technology also used in Tokyo Disneyland's Pooh's Hunny Hunt) to move and spin through a lagoon amid waterfalls and whirlpools, and the 2 ft 6 in (762 mm) narrow gauge DisneySea Electric Railway, an overhead electric trolley that transports riders to and from the American Waterfront.

It also features the 2 ft 6 in (762 mm) gauge DisneySea Electric Railway, which takes passengers from The American Waterfront to nearby Port Discovery.

[18] Guests wear 3-D glasses while riding spinning vehicles that travel through virtual environments based on classic carnival games.

However, in October 2022, The Oriental Land Company announced that "due to the extension of the project's construction period, which was impacted by delay in productions overseas, as well as restrictions placed on logistics and border measures to prevent the spread of COVID-19" the opening date of Fantasy Springs had been pushed back to June 6, 2024.

[24] Tokyo DisneySea reached the milestone of 10 million guests in 307 days since its grand opening, which is a record among theme parks worldwide.