Straphangers on this morning's Shark Train are coming forward with their stories, one woman telling us, "A guy near to me was smiling at his phone, and eventually showed us all the photo he had. It was a shark on the floor of a subway car posed with a Red Bull, Cigarette, and MetroCard." And that guy certainly is proud of himself! Juan D. C. emailed us this morning with no less than 75 photos of the shark adorned in props he placed around and in it. 
 
 He told us, "I saw the Shark when I boarded the Queens bound N train at Union Square at exactly 12:02 a.m. It was upside down when I got on and I turned it around thinking: 'This can't be real'... I was wrong. The shark was about 1.5 feet long, it looked like it was only a few hours dead." 
 
 Juan, who works in advertising and was at a Hot97 party earlier in the night, theorized that the shark could be a marketing ploy: "It's Shark Week and this is a DISGUSTINGLY TERRIBLE BUT GOOD Promotion from Discovery Channel." But that is not true. More than likely someone caught the shark and left it on the train dying, or already dead. Juan says, "Either way, it was a pretty crazy experience and as usual New Yorkers, like myself, are wise guys so we added a MetroCard under its fin, just in case it needed to transfer." He added, "I do think it's disrespectful to do certain things to dead shark corpses. But adding a MetroCard under its fin is not disrespectful." 
 
 Sadly, no one started a conga line: 

 Story highlights Shark carcass found on subway 
 
 Passengers pose for photos 
 
 MTA officials don't know how it got on board 
 
 Commuters encountered an unexpected passenger when they boarded a New York City subway train early Wednesday: a shark. 
 
 A still wet 1-and-a-half foot shark carcass was discovered on the floor of a subway car at around midnight in downtown Manhattan. 
 
 "I thought it was just a plush toy or a prank," passenger Juan Cano told CNN. "When I saw the teeth that's I knew it was real, it was no toy." 
 
 The shark, described as weighing between five to 10 pounds, was discovered near a row of seats by passengers on the Queens-bound N train at the 14th Street stop. 
 
 The shark had blood on its mouth, as though it has recently been punctured by a fishing hook, according to Cano. 
 
 The shark quickly drew a crowd, as entering subway riders began to photograph and pose with the shark, even adding a subway fare card, soft drink can and a cigarette to the supine shark as props. 
 
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 After several stops, an MTA official entered the train at Queensboro Plaza, cleared it of passengers, and locked its doors, Metropolitan Transit Authority spokesmen Kevin Ortiz told CNN. The shark was removed later that night and disposed of. 
 
 The shark's species was never identified. 
 
 MTA officials were unable to "determine the shark's origin," according to Ortiz. 
 
 This is not the first case of a mysterious shark appearance. 
 
 In Nantucket last week, a 5-foot-long shark carcass was discovered outside the door of a bar on Water Street. 
 
 "I have no idea how or why it got there." Sea Dog Brew Pub manager Jim Agnew told CNN. 
 
 Asked whether anything out of the ordinary happened that evening, Agnew could only point to having to ask two people to leave, but those were "peaceful ejections" he said -- adding that the customs had since returned to the bar. 
 
 Some have speculated that the appearance of sharks in mysterious places is a publicity stunt for the Discovery Channel's "Shark Week." Photos of the two mysterious sharks have exploded on social media using the hashtag #sharkweek. 
 
 Discovery Channel denies any involvement. 
 
 "Shark Week is all about conservation, so it deeply saddens us that someone would think that this was funny or in any way connected to our celebration of sharks," said spokeswoman Laurie Goldberg. 
 
 MTA officials told CNN they have no plans to "continue investigating" how the shark got on the subway.
– NYC subway riders got a taste—and smell—of what Shark Week is all about in the wee hours of yesterday morning when they found a dead shark riding the Queens-bound N train. The creature, described by CNN as 1.5 feet in length and no more than 10 pounds, apparently had a bloodied mouth, possibly indicating it was recently caught. Passengers reacted exactly as you might expect: They stuck a cigarette in its mouth, posed it next to a can of Red Bull and a MetroCard, and took a photo. The MTA, which removed the shark (and disposed of it by putting it in a garbage bag and tossing it in the trash, WBAC reports), says it doesn't know how it got there. But one rep tweeted: "Latest on the shark on the N train: unconfirmed reports that the shark was headed home after a night of partying in Coney Island." And, bummer, the MTA says it won't be investigating any further. Surprisingly, this isn't the only mystery shark to recently pop up on dry land. Last week in Nantucket, a five-foot shark carcass was found outside a bar. "I have no idea how or why it got there," the owner told CNN.