The Conceptual Shark
ShortStory 3,760 words Recommended by 3 award/anthology sources
"Adam is washing his hands when it happens again. First the water pouring out of the faucet becomes icy cold seafoam. Then the porcelain bottom of the sink dissolves, making him flinch backward. The bathroom’s tiled floor is intact; the mirrored medicine cabinet is still fixed to the wall across from him, showing his anxious doppelganger. But when he peers into the sink itself, he sees the metal drain cap spiraling down into the depths of the ocean."
Content warnings 2
deathviolence
Quasar links out; the story lives on Asimov's, where the author gets the click.