Last I checked any pH above 7 was basic. Seawater has been on the basic side since 1900. The changes are neverin the acid range so acidification is wrong. Less basic...maybe.
The final (honest) chart in the article shows that, if anything, the ocean has been becoming a little more basic in the last century. The "ocean acidification" notion is a complete and utter fraud, based upon the omission of data not friendly to this theory. Shame on these dishonest scientists.