What does this map show?
 

Submarine ingress routes into the US.

how far out to sea you could go if you stacked the population of those areas head to toe

How far out to sea the pollutant runoff for that area affects the ocean ecosystem.

Not sure, but very curious. The gulf coast data blip is interesting.

I figured that had something to do with the Mississippi dead zone.

I don't think it shows anything at all.

Population.

The map shows an outline of the United States, with black pokey things sticking out.

Spot on Supe!

Hmmm, if it was population, then wouldn't NY and LA be the biggest spikes?

I guess it could be population within a given distance of the coast. Cali has lots of people, but I don't know if as many live right ON the beaches as they do in FL.

Nope, even by that logic, the biggest spike still wouldnt be MS.... Thinking Max is right...

correct, but insufficient - what population, exactly?

masraum is right - it cannot be the total popn., so it must be a subset

Beats me!

Maybe Hispanic.

the answer is actually in masraum's post, but he is not thinking of one word in the right way...

Population of something other than people?

nope, subset of humans

I'm gonna wait for tomorrow to pick up the big crowd of people screwing off at work before I reveal, so I hope it doesn't keep you up tonite!

How about something like where people or immigrants entered the country.

No, it can't be that because the border with Mexico would be all kind of spikey...

I give up

Fishermen and women.