Season 5

The fifth season of the American animated television series SpongeBob SquarePants, created by former marine biologist and animator Stephen Hillenburg, premiered on February 19, 2007, with the episodes "Rise and Shine," "Waiting," and "Sing a Song of Patrick." The whole season has aired 20 episodes. The season ended with "Goo Goo Gas," on July 19, 2009.

The season 5 DVDs were split by volume. The volume one DVD was released in Region 1 on September 4, 2007, the volume two DVD was released on November 18, 2008, and the season set was released entirely in Region 2 on November 16, 2009.

Title card	#	Title	Airdate	U.S. viewers (millions)
	81	"Friend or Foe"	April 13, 2007	N/A
	Mr. Krabs tells the story behind his and Plankton's rivalry.
	82a	"The Original Fry Cook"	July 30, 2007	N/A
	SpongeBob feels inferior when a former Krusty Krab fry cook, Jim, visits.
	82b	"Night Light"	July 30, 2007	N/A
	SpongeBob reads a scary book and develops a fear of the dark.
	83a	"Rise and Shine"	February 19, 2007	N/A
	Patrick's morning routine is revealed.
	83b	"Waiting"	February 19, 2007	N/A
	SpongeBob waits for a toy to arrive in the mail.
	83c	"Fungus Among Us"	September 29, 2007	N/A
	SpongeBob spreads an itchy fungus around Bikini Bottom.
	84a	"Spy Buddies"	July 23, 2007	N/A
	Mr. Krabs hires SpongeBob and Patrick to spy on Plankton.
	84b	"Boat Smarts"	July 23, 2007	N/A
	Mrs. Puff hosts a documentary about good and bad boaters, starring SpongeBob and Squidward.
	84c	"Good Ol' Whatshisname"	July 23, 2007	N/A
	SpongeBob and Squidward compete in a contest to learn the names of all the Krusty Krab customers.
	85a	"New Digs"	July 25, 2007	N/A
	SpongeBob moves into the Krusty Krab after being late to work.
	85b	"Krabs à la Mode"	July 25, 2007	N/A
	Mr. Krabs turns the Krusty Krab into an ice rink after Plankton turns down the heat.
	86a	"Roller Cowards"	July 27, 2007	N/A
	SpongeBob and Patrick are afraid to go on a new roller coaster.
	86b	"Bucket Sweet Bucket"	July 27, 2007	N/A
	Plankton gets SpongeBob, Patrick, and Squidward to fix up the Chum Bucket.
	87a	"To Love a Patty"	July 26, 2007	N/A
	SpongeBob falls in love with a Krabby Patty.
	87b	"Breath of Fresh Squidward"	July 26, 2007	N/A
	Squidward becomes nice after being shocked by an electric fence.
	88a	"Money Talks"	July 31, 2007	N/A
	Mr. Krabs wishes he could talk to money.
	88b	"SpongeBob vs. The Patty Gadget"	July 31, 2007	N/A
	Squidward makes a machine that cooks Krabby Patties, so SpongeBob challenges it to a "patty war."
	88c	"Slimy Dancing"	July 31, 2007	N/A
	Squidward, SpongeBob, and Patrick participate in a dance contest.
	89a	"The Krusty Sponge"	July 24, 2007	N/A
	Mr. Krabs makes the Krusty Krab SpongeBob-themed after a critic reviews SpongeBob's work.
	89b	"Sing a Song of Patrick"	February 19, 2007	N/A
	Patrick writes a song.
	90a	"A Flea in Her Dome"	August 1, 2007	N/A
	Sandy brings a flea back to her treedome.
	90b	"The Donut of Shame"	August 1, 2007	N/A
	Patrick thinks he stole SpongeBob's donut and tries to hide it from him.
	90c	"The Krusty Plate"	August 1, 2007	N/A
	SpongeBob attempts to remove a stubborn spot from a plate.
	91a	"Goo Goo Gas"	July 19, 2009	4.95
	Plankton creates a gas that turns adults into babies.
	91b	"Le Big Switch"	September 29, 2007	N/A
	Mr. Krabs enters SpongeBob in a chef-exchange program.
	92	"Atlantis SquarePantis"	November 12, 2007	9.22
	SpongeBob, Patrick, Squidward, Mr. Krabs, Sandy, and Plankton journey to Atlantis.
	93a	"Picture Day"	August 2, 2007	N/A
	SpongeBob tries to get to boating school without getting filthy for Picture Day.
	93b	"Pat No Pay"	August 2, 2007	N/A
	Patrick must work at the Krusty Krab because he can't pay for his food.
	93c	"BlackJack"	August 2, 2007	N/A
	SpongeBob thinks his cousin BlackJack has kidnapped his parents.
	94a	"Blackened Sponge"	August 3, 2007	N/A
	SpongeBob gives himself a black eye.
	94b	"Mermaid Man vs. SpongeBob"	August 3, 2007	N/A
	Plankton hypnotizes Mermaid Man and Barnacle Boy.
	95a	"The Inmates of Summer"	November 23, 2007	N/A
	SpongeBob and Patrick are accidentally sent to a prison camp.
	95b	"To Save a Squirrel"	November 23, 2007	N/A
	SpongeBob and Patrick are stranded in the forest.
	96	"Pest of the West"	April 11, 2008	6.10
	The story of SpongeBob's Western ancestor, SpongeBuck, is told.
	97a	"20,000 Patties Under the Sea"	November 23, 2007	N/A
	Mr. Krabs sends SpongeBob and Patrick to run a traveling restaurant.
	97b	"The Battle of Bikini Bottom"	November 23, 2007	N/A
	SpongeBob and Patrick battle over cleanliness.
	98	"What Ever Happened to SpongeBob?"	October 13, 2008	7.70
	SpongeBob develops amnesia and goes missing.
	99a	"The Two Faces of Squidward"	November 23, 2007	N/A
	SpongeBob slams Squidward's face with a door, and Squidward becomes handsome.
	99b	"SpongeHenge"	November 23, 2007	N/A
	SpongeBob's holes make music in the wind, attracting jellyfish.
	100a	"Banned in Bikini Bottom"	November 23, 2007	N/A
	Krabby Patties are banned from Bikini Bottom.
	100b	"Stanley S. SquarePants"	November 23, 2007	N/A
	SpongeBob's cousin visits and causes trouble.