Question: The episode "Dunces and Dragons," also known as "Lost in Time," is the sixth episode of the series that takes place in what fictional underwater city?

Context articles: BioShock 2
SpongeBob SquarePants (season 11)
List of SpongeBob SquarePants guest stars
SpongeBob SquarePants (season 6)
SpongeBob SquarePants (season 10)
SpongeBob SquarePants (season 4)
SpongeBob SquarePants
SpongeBob SquarePants (season 5)
SpongeBob SquarePants (season 9)
Dunces and Dragons

BioShock 2 is a first-person shooter video game developed by 2K Marin and published by 2K Games.
 It is the sequel to the 2007 video game "BioShock" and was released worldwide for Microsoft Windows, the PlayStation 3, and the Xbox 360 on February 9, 2010.
 Feral Interactive released an OS X version of the game on March 30, 2012.
 Set in the fictional underwater dystopian city of Rapture, the game's story takes place eight years after the events of the first "BioShock".
 Assuming control of Subject Delta, a hulking Big Daddy, players are tasked with fighting through "splicers", the psychotic human population of the city, using weapons and an array of genetic modifications.
 The game also introduces a story-driven multiplayer mode called "Fall of Rapture", which takes place during Rapture's 1959 civil war, before the events of the first game.
The eleventh season of the American animated television series "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, began airing on Nickelodeon in the United States on June 24, 2017, beginning with the episode "Spot Returns"/"The Check-Up".
 The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom.
In addition to the show's regular cast of voice actors, guest stars have been featured on "SpongeBob SquarePants", an American animated television series created by marine biologist and animator Stephen Hillenburg for Nickelodeon.
 "SpongeBob SquarePants" chronicles the adventures and endeavors of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 Many of the ideas for the show originated in an unpublished, educational comic book titled "The Intertidal Zone", which Hillenburg created in the mid-1980s.
 He began developing "SpongeBob SquarePants" into a television series in 1996 upon the cancellation of "Rocko's Modern Life", which Hillenburg directed.
 The pilot episode first aired on Nickelodeon in the United States on May 1, 1999.
 The show's ninth season premiered in 2012, and episodes of "SpongeBob SquarePants" have aired.
 A feature-length film adaptation of the show, "The SpongeBob SquarePants Movie", was released in 2004; in 2015, a sequel, "", was released.
The sixth season of the American animated television series "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, aired on Nickelodeon from March 3, 2008 to July 5, 2010, and contained 26 episodes, beginning with the episode "Krabby Road".
 The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 The season was executive produced by series creator Hillenburg and supervising producer Paul Tibbitt, who also acted as the showrunner.
 In 2009, the show celebrated its tenth anniversary on television.
 The documentary film titled "" premiered on July 17, 2009, and marked the anniversary. "
SpongeBob's Truth or Square", a television film, and the special episode "To SquarePants or Not to SquarePants" were broadcast on Nickelodeon, as part of the celebration.
The tenth season of the American animated television series "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, began airing on Nickelodeon in the United States on October 15, 2016.
 It opened with the episode "Whirly Brains", and is scheduled to conclude with "The Incredible Shrinking Sponge".
 The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 The season was executive produced by series creator Hillenburg, and was the first season of the show not to involve long-time crew member and former showrunner Paul Tibbitt.
 The showrunners for this season were Marc Ceccarelli and Vincent Waller, who also acted as supervising producers.
 It is the shortest season, containing 11 episodes instead of the usual 26-episode length.
The fourth season of the American animated television series "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, aired on Nickelodeon from May 6, 2005 to July 24, 2007, and contained 20 episodes, beginning with the episodes "Fear of a Krabby Patty" and "Shell of a Man".
 The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 The season was executive produced by series creator Hillenburg, while writer Paul Tibbitt acted as the supervising/co-executive producer and showrunner.
 The show underwent a hiatus on television as Hillenburg halted the production in 2002 to work on the film adaptation of the series, "The SpongeBob SquarePants Movie".
 Once the film was finalized and the previous season had completed broadcast on television, Hillenburg wanted to end the show, but the success of the series led to more episodes, so Tibbitt took over Hillenburg's position as showrunner and began working on a fourth season for broadcast in 2005.
 Hillenburg remained with the show, but in a smaller advisory role in which he reviewed each episode and offered suggestions to the show's production crew.
SpongeBob SquarePants is an American animated television series created by marine biologist and animator Stephen Hillenburg for Nickelodeon.
 The series chronicles the adventures and endeavors of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 The series' popularity has made it a media franchise, as well as the highest rated series to ever air on Nickelodeon, and the most distributed property of MTV Networks.
 As of 2015, the media franchise has generated $12 billion in merchandising revenue for Nickelodeon.
The fifth season of the American animated television series "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, aired on Nickelodeon from February 19, 2007 to July 19, 2009, and contained 20 episodes, beginning with the special episode "Friend or Foe".
 The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 The season was executive produced by series creator Hillenburg and writer Paul Tibbitt, who also acted as the showrunner.
The ninth season of the American animated television series "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, originally aired on Nickelodeon in the United States from July 21, 2012 to February 20, 2017, and contained 26 episodes, beginning with the episode "Extreme Spots"/"Squirrel Record".
 The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 The season was executive produced by series creator Stephen Hillenburg and writer Paul Tibbitt, who also acted as the showrunner for the first 15 episodes of the season.
 Supervising producers Marc Ceccarelli and Vincent Waller acted as the showrunners for the remainder of the season.
"Dunces and Dragons", also known as "Lost in Time", is the sixth episode of the fourth season and the 66th overall episode of the American animated television series "SpongeBob SquarePants".
 It was written by Zeus Cervas, Erik Wiese and Tim Hill, and the animation was directed by supervising director, Alan Smart and Tom Yasumi.
 Cervas and Wiese also functioned as storyboard directors.
 The episode originally aired on Nickelodeon in the United States on February 20, 2006 as a half-hour special.