How I Met Your Mother (2005–2014)
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The Mermaid Theory 

Ted goes on a boating trip with Zoey's husband, "The Captain." Menawhile, Barney's "Mermaid Theory" prevents Marshal from having a nice dinner with Robin, and the narrator tries to recall the details of a fight between Lily and Barney.



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Episode cast overview:
Angus McClelland ...


Since no one else in the group can make it, Zoey and Ted are going out to a function by themselves. Lily sees this "date" as dangerous territory for the two of them since Zoey is a married woman, and they all think Zoey's husband, George van Smoot who Zoey and by association the gang call "The Captain", has a sinister air about him. It becomes even more awkward for Ted when Zoey lies to the Captain, she telling him that she is out with "friends" plural. Lily believes the only way for Ted's friendship with Zoey to continue is if he includes the Captain in their outings. But when Zoey can't make the planned outing - a sailing trip - Ted is afraid for his life having to spend 6 long hours alone with the Captain in open water. Meanwhile, Robin and Marshall, who realize they never spend time alone together, decide to go out to dinner without the others. Their evening could not be more awkward, which they both realize. Marshall attributes the awkwardness and the two of them never spending ... Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


TV-PG | See all certifications »




Release Date:

6 December 2010 (USA)  »

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Technical Specs


Sound Mix:


Aspect Ratio:

1.78 : 1
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Did You Know?


When Barney says: "Manatees City, where the grass ain't green and the girls ain't pretty" is a reference to Guns N' Roses song "Paradise City" See more »


Ted Mosby: Hey guys, Zoey just told me about this great Frank Lloyd Wright retrospective, who's in?
Lily Aldrin: Sorry, I'm ummmm... I don't know, washing my hair.
Marshall Eriksen: Running the water.
Robin Scherbatsky: Holding the towel.
Barney Stinson: I'll be home trying to get over the fact that no one invited me to the big hair washing party.
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References The Little Mermaid (1989) See more »


Hey Beautiful
Written by The Solids
Performed by The Solids
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User Reviews

Flawed Premise to the Marshall/Robin Storyline
23 August 2016 | by See all my reviews

The premise of Marshall and Robin not hanging out is bunk. In multiple episodes across several seasons the have hung out alone: Robin took him to the firing range in season 2, Marshall took her to Little Minnesota and the Hoser Hut, and Robin drove Marshall to the airport in Three Days of Snow. This invalidates their entire storyline and the associated theory. The other story lines aren't nearly good enough to pull up the slack from the goose egg of this one. The first and last scenes have solid jokes, but they only highlight the lack of good jokes the rest of the episode.

**Bob Saget narrates throughout the episode a lot, so I don't understand the other reviews

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