1. Thousands of red crabs did not swarm Florida roads this week in Irma's aftermath.
Multiple videos appeared Wednesday purporting show large groups of crabs on Florida roads. One of those videos, shared on the Facebook page of a site calling itself Daily News, had nearly a million views and tens of thousands of comments. Snopes traced the video to a site called EBUZZ.buzz, which has a track record of sharing fake news.
Despite showing up on Facebook as though it were live, the footage actually appears to have been taken from a 2011 video that shows crabs migrating in Cuba's Bay of Pigs — where the phenomenon is well-documented.
2. Don't trust viral "live" videos of Irma that last four hours, the maximum Facebook will allow. This "Face Of Hurricane Irma" video is a hoax. Videos and photos of that cloud formation date back to 2011.
This post received millions of views and hundreds of thousands of shares, but it's just a four-hour loop of the same recycled video.
3. Jennifer Lawrence was not fired by Stan Lee from her role in X-Men over her comments about climate change.
Websites TheLastLineOfDefense.org and FreedumJunkshun.com published a false story about the actress getting fired over her comments about climate change and Donald Trump in an interview with UK's Channel 4 news. The websites claim to be satire in the footer, but The Last Line Of Defense has contributed to the spread of misinformation during Hurricane Harvey. Other sites, which did not include a satire disclaimer, frequently copied the posts.
The false Jennifer Lawrence story has been reposted to more than a dozen other websites and received thousands of Facebook reactions, comments, and shares, according to social share tracking tool BuzzSumo.
None of the sites posted proof of the claim. Although Stan Lee's quotes are attributed to TMZ, a search of the website doesn't bring up any results of this story.
4. This video does not show footage of flooding at Miami International Airport. A number of people have shared it, including the president's director of social media.
5. A fake "Facebook Live" video stream claims to show Hurricane Irma in real time, from space.
The stream, provided by the innocuously named 'Trending News' and subsequently shared by a page called 'NewsFeed,' had more than 3 million views as of Sunday afternoon.
The page falsely claim the stream is 'Live from Space' and provided by NASA. NASA's latest updates on Irma can be found here.
6. This is not representative footage of downtown Miami flooding. It is the Miami River. It looks like a river because it's a river.
On Sunday, Twitter user Killarney Knight shared footage of the canal that runs through downtown Miami, describing the city as "underwater." Some news organizations picked up the clip, saying it looks "like a disaster movie."
But Twitter users were quick to point out that there is... always... water there, since it's a river.
7. This is not a photo of gridlock in Florida.
People on Facebook are sharing a photo from the worst traffic jam in Texas history, when residents evacuated Hurricane Rita in 2005, to illustrate stories about Florida evacuations.
A quick reverse image search shows the photograph was taken in September of that year, when an estimated 2.5 million people took to the roads to leave Houston in advance of the storm.
Some waited for more than 20 hours in the heat during the gridlock, with dozens suffering and even dying of heatstroke. The botched emergency exit became a cautionary tale of how not to evacuate a city.
Shark-related hoaxes show up in every major national disaster, usually in the form of a shark swimming in the street. The image above was created using the website breakyourownnews.com, according to the easy-to-miss watermark in the top right. It's not clear how many people fell for it, but in case it needs saying: there have been zero reports of Irma containing sharks.
9. A viral Facebook post, that has been shared nearly a million times, recommends putting valuables in a dishwasher. However, it's not likely a dishwasher will keep them dry.
Appliance manufacturer Maytag told BuzzFeed News they do not recommend storing valuables in a dishwasher. The Environmental Protection Agency has also warned that dishwashers may flood in a 2009 report.
10. Hotels are not required to accommodate pets during evacuations.
A Facebook message that has been copy-and-pasted dozens of times says that because of the 2006 Pets Evacuation and Transportation Standards Act hotels are required to take in pets, but that's not in the act. Instead, it requires governments organizations to take pets into account during evacuations.
FEMA has a list of how owners can take care of pets in emergency situations and a link to a pet-friendly hotel finder. Service animals, however, have to be accommodated in any space where the general public is allowed. This includes government organizations, non-profits, and businesses.
11. This video of a five-story building collapsing got 2 million views and over 50,000 shares on Facebook and was posted about on The Daily Mail, but it's not of the Virgin Islands. As Mashable reports, the video is of a flood in Tibet and it first went viral in July.
12. Zello, a walkie-talkie app many used during hurricane Harvey, is warning its users against misinformation. The app will not work without an internet connection, despite reports saying otherwise.
13. This is not a photo of the St Maarten airport after Irma. This image has been tweeted about and posted to blogs, but it's actually of the Los Cabos airport in Mexico after a 2014 hurricane.
14. Any claims about Irma hitting the east coast are currently unfounded. People are using a map from a 1960 hurricane to justify a false forecast about Irma. The Daily Express and some blogs said Irma could "devastate" the entire east coast, but offer no proof.
Official models and forecasts have not raised the possibility of Irma hitting the east coast. You can see the live forecast map and other updates in our post here.
15. Watch out for the false weather forecasts. The National Weather Service put out a warning last week after a false forecast went viral.
16. Irma is not about to be upgraded to a "Category 6" storm.
A blog post by Republican congressional candidate Michael Snyder titled, "Category 6? If Hurricane Irma Becomes The Strongest Hurricane In History, It Could Wipe Entire Cities Off The Map," speculated that Irma could be designated as a new category of hurricane. Only categories 1 through 5 exist on the current scale. A Category 5 hurricane implies "catastrophic damage."
"Once you say catastrophic and there's near complete damage, why do you need a 6?" Dennis Feltgen, a spokesperson for the National Hurricane Center, told CBC news.
17. This is not a video of Irma hitting the Caribbean. It's a video of a tornado that was posted at least a year ago.
The same footage was posted to Facebook and has attracted over 19 million views. It even fooled a meteorologist, who later apologized for posting the old video.
18. This image attracted hundreds of retweets and thousands of likes — but it shows Hurricane Harvey, not Irma.
This post will be updated as we see more hoaxes and misinformation being shared. The most recent debunkings will appear at the top of the post.