Nobody knows for sure what the gunk is, but Petty Officer 1st Class Terry Hasenauer says the Coast Guard is sure what it is not.
"It's certainly biological," Hasenauer said. "It's definitely not an oil product of any kind. It has no characteristics of an oil, or a hazardous substance, for that matter.
"It's definitely, by the smell and the makeup of it, it's some sort of naturally occurring organic or otherwise marine organism."
No one in the area remembers ever seeing anything like the sea blob before. http://www.adn.com/2835/story/864687.html -via reddit
Update: The tests are back. The blob has been identified as algae.