The mysterious blob has been identified - it appears to be algae.

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Sometimes reality is even stranger than science fiction. A huge unknown substance, described by eye witnesses as a dark, gooey blob is floating off the north coast of Alaska. No one in the area remembers seeing anything like it before.

According to Don Hunter of The Alaska Daily News:

Nobody knows for sure what the gunk is, but Petty Officer 1st Class Terry Hasenauer says the Coast...