"Oceanic" is a science fiction novella by Australian writer Greg Egan, published in 1998.

"Oceanic" was first published in the August 1998 edition of Asimov's Science Fiction by Dell Magazines.

Russell Letson, writing in the Locus Magazine, says that the novella "edges into extreme post-human and/or far-future territory, but that story’s armature is a kind of bildungsroman" and "is a whole novel’s worth of material that remains background.

As he grows into manhood his experiences and studies begin to conflict with his deep rooted faith.

Eventually he joins a small circle of scholars studying the effects of one of Covenant’s most abundant microbes as his views of life change dramatically.