SpongeBob SquarePants

Whelk Attack

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Episode Information
Season №: 7
Episode №: 148b
Airdate: October 2, 2010
Sister episode(s): "The Masterpiece"
Writer(s): Luke Brookshier
Nate Cash
Richard Pursel
Supervising Producer: Paul Tibbitt
Storyboard: Luke Brookshier
Nate Cash
Animation: Tom Yasumi
Creative: Vincent Waller
See all credits for this episode.
Previous: "The Masterpiece"
Next: "You Don't Know Sponge"
List of episodes

"Whelk Attack" is a SpongeBob SquarePants episode from season seven. In this episode, large sea whelks invade Bikini Bottom.



SpongeBob and Patrick are in Jellyfish Fields when they hear a strange noise. Soon, a stampede of large whelks make their way through Jellyfish Fields, destroying anything in their path, including SpongeBob and Patrick. The whelks covered them in purple goo, and proceeded. As the whelks made their way to Bikini Bottom, SpongeBob and Patrick decide to warn the Bikini Bottomites about the whelks, but too late. Back in Bikini Bottom, the whelks were chasing and terrorizing everyone. They would blow purple goo bubbles around their victims and swallow the bubbles with their victims inside.
Whelk TV

SpongeBob and Patrick viewing public news.

SpongeBob and Patrick were asking who are those monsters. But Patrick was never scared of them. Fish Head explains them on TV, suddenly he signs off the news when he also has been eaten by a sea whelk. When SpongeBob and Patrick got to the Krusty Krab, they warn Mr. Krabs about the coming danger. Soon after, the whelks make their way to the Krusty Krab, but Mr. Krabs thinks they are just plain old customers. A larger mother whelk is then revealed, assisting her "babies." When he offered them all a Krabby Patty, the mother swallowed him, along with Squidward and the entire Krusty Krab. SpongeBob and Patrick then ran to Sandy 's treedome, where after being tested that they were SpongeBob and Patrick and not the whelks, they went inside. Sandy put metal armor around the Treedome for protection against the whelks and told SpongeBob and Patrick her plan to defeat the whelks. Suddenly, the whelks crack and destroy the Treedome and SpongeBob,
Destroyed house

Sandy's treedome is destroyed

 Sandy, and Patrick are swallowed by the mother whelk. Inside the whelk, Sandy discovered that the whelks were sick, or "had the sniffles." SpongeBob then simply helped the whelk get better again by doing what he did to cure his Suds, revealing the whelk's true form, a tiny, helpless whelk. SpongeBob does this to all the whelks and restored the whelks' happy family. All of the "eaten" victims were rescued, and the episode ends with Squidward complaining about all that just because the whelks "had the sniffles," then getting doused with purple whelk goo.



 ) Associated production music
 ) Original music
 ) SpongeBob music

  The Creature A - Gregor F. Narholz [title card]
  Unknown Hawaiian Sting 2 - Sage Guyton, Jeremy Wakefield [opening]
  Earl's Revenge - Sage Guyton, Jeremy Wakefield [SpongeBob, Patrick jellyfishing]
  Monster Bug (a) - Gregor F. Narholz [rumbling]
  Lite Conversation - Gerhard Narholz [SpongeBob and Patrick covered in slime]
  Fight for Your Life! - Gregor F. Narholz [whelks invading Bikini Bottom]
  Bikini Bottom News Theme - Nicolas Carr [news on TV]
  Drama Link (d) - Hubert Clifford [SpongeBob screams]
  Steel Sting (Original Version) - Jeremy Wakefield ["Hey, Gary."]
  Cartoon Sting 2 - Gerhard Narholz [Patrick teases a whelk]
  The Creature A - Gregor F. Narholz [whelk roars at him]
  Attack - Tony Hymas [SpongeBob warning Krabs about the whelks]
  Harp Ding - Nicolas Carr ["That means hungry!"]
  Monster Bug (a) - Gregor F. Narholz [whelks approaching Krusty Krab]
  Sailor's Sting 4 - Michael Bolger, Nicolas Carr ["Krabby Patties! Get your Krabby Patties!"]
  Monster Bug (a) - Gregor F. Narholz [giant mother whelk appears]
  The Creature A - Gregor F. Narholz [mother whelk eats Krusty Krab]
  Attack of the Giant Robots - Cris Velasco [Sandy lets SpongeBob and Patrick in]
  The Creature B - Gregor F. Narholz ["What are we gonna do?"]
  Retro Cool 03 095 D - Pat Irwin [action-packed answer]
  Fight the Beast! - Gregor F. Narholz [whelks invade treedome]
  Command Post 2 - Harry Bluestone, Emil Cadkin ["Follow me!"]
  Death Throws - Harry Bluestone, Emil Cadkin ["I guess this is it, Patrick."]
  Fight the Beast! - Gregor F. Narholz [mother whelk eats Sandy]
  Desperate Situation - Phillip Green [SpongeBob and Patrick inside the whelk's stomach]
  Fighting Legions A - Gregor F. Narholz ["The Krusty Krab!"]
  Vibe Q Sting - Nicolas Carr ["Hmm..."]
  Sneaking About - Phillip Green [SpongeBob and Patrick lend Sandy their corneas]
  Lonely Stranger - Laurie Johnson [Sandy examining the whelks' slime under a microscope]
  Steel Link (c) - Jeremy Wakefield ["I know just what to do!"]
  Lion Heart - Larry Hochman [SpongeBob absorbing the whelks' snot]
  Lap Steel - Nicolas Carr [SpongeBob laughs]
  Wahini Wobble - Sage Guyton, Jeremy Wakefield [ending]



  • It is revealed that SpongeBob's mother's maiden name is BubbleBottom.
  • In this episode, to put a metal shield over her treedome, Sandy presses a button on her tree, but in "Texas" it was a lever.
    • The metal sheeting also goes much slower in this episode, rather than "Texas."
  • SpongeBob refers to the previous episode, "Suds," when he says "After all, I've had the suds."
  • This episode premiered 11 years after the premiere of "The Chaperone" and "Employee of the Month."


  • When the whelks appear, one eats Dale, but earlier, when SpongeBob goes in the Krusty Krab, Dale is in the Krusty Krab.
  • When Sandy lets in SpongeBob and Patrick, she's wearing her spacesuit, but when they're all in her treedome, Sandy is in her bikini.
  • When Sandy uses SpongeBob's helmet, it does not have a flower on the top. But when Sandy is at the Krusty Krab, in the Sea Whelk's stomach, the helmet does have a flower.
  • During the time when Sandy uses SpongeBob's helmet, Patrick is still wearing his helmet, but when they land, Patrick's helmet disappears.
  • When the tower is raising from the Krusty Krab, in one frame SpongeBob has his uniform hat on, while in the previous and following frame, he does not.

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