So far the effect is subtle, not noticeable to the eye, and can only be detected by intricate chemical tests. But as ocean acidification increases, scientists expect more reefs to dissolve and become flatter, and that fish will leave. Also, increasing acidity eats away at the shells of the shellfish, making them easier prey for other fish and harder for humans to harvest. Scientists expected limestone to dissolve, but not until the second half of this century.
read more