A local apocalypse soon genius wrote a letter to the paper with the usual rantings about floods and famine signaling the second coming. Among the litany of ‘signs’ was a “two-mile lake in the Atlantic”. I’ve searched Snopes and did a cursory search of the Web and this forum, but find nothing on this. Anybody care to debunk?
Rather than attempt to debunk it, write a letter yourself demanding the crackpot explain in detail how a lake can exist with the ocean. (And no, don’t play semantics with a lake on a island in the ocean, either.)
I intend to write a letter about it, but would like to have some debunking source to quote.
Also, any attempt to logically explain the impossibility would only be met with the “miracle” argument, I’m sure.
Perhaps walking on water will be part of it as well.
Maybe it was an obscure reference to the Atlantic Conveyer; Global warming melts polar ice, altering salinity of ocean, disrupting currents that regulate Earth’s temp, causing (of all things) an ice age. It does have to do with a lot of fresh water being introduced into the Atlantic, can’t say I’d call it a lake.
The lake in the Atlantic bit may have something to do with this: Arctic Rivers’ Fresh Water Flows Could Change Atlantic Ocean Current. Although, if it’s two-miles long, I’d expect it to be made of Fire. 
Well, if it actually happens, he’ll get to say “I told you so” and we’ll all have bigger things to think about than physical explanations for stuff.
But assuming it’s like every previous apocalyptic prediction – i.e., dead wrong – it can’t happen and won’t happen, but the mere presentation of irrefutable physical proof that it can’t and won’t happen won’t have any effect on the belief of the nutjob in question or those who choose to believe him.
Assuming by “lake” he means isolated fresh water in a saltwater ocean, I’d say Brownian motion and one the laws of thermodynamics would pretty well explain why that will not occur.
I’m quite sure that I’ve never heard of a “two-mile lake in the Atlantic” listed as one of the signs of the Apocalypse. The signs of the Apocalyse are things like: every disease and infirmity has been cured, a great apostacy occurs (ie, large numbers of people renounce their belief in God), the Jewish people are converted to Christianity, and some sort of huge cataclism wipes out most of the world’s population. Nothing about anomalous pockets of fresh water out in the ocean.
There are islands in the Atlantic, they have lakes.
I remember something in the BBC series Blue Planet about a "lake at teh bottom of the Gulf of MExico (I think, I’ll have to watch it again). Essentially there was a this lake-like area, with coastline and such surrounding water that was different (heavier? saltier?). Mayeb this is what it was talking about.
Maybe an atoll?
http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Atoll&gwp=8&curtab=2222_1
The only thing I find on something like this is a large (18,000 sq.km) area of recurring hypoxia in that area. Hardly a fresh-water lake in any sense of the word, but it doesn’t take much for these extremist-types to crank up another crackpot theory.
Maybe he was thinking of the Sargasso Sea, which is in the middle of the Atlantic Ocean.
The lake is a brine pool of extremely saline water, which is salty enough that fish get stuck in it, and it often kills them. The pools are usually lined with mussels around the “shore”.