Follow the blog spam.

So this article is a summary of, and links to http://www.livescience.com/animals/green-slug-animal-plant-1...

But that article only mentions its source "The finding was first reported by Science News" w/o a link. Some googling turns up:

http://www.wired.com/wiredscience/2010/01/green-sea-slug/

which appears to be the original reporting.