Scientists have worried for years about ocean acidification affecting shelled creatures in the future, but according to a new study, it's already happening, and has been for over a hundred years.

多年来科学家都对海水酸化对甲壳类生物的未来的影响非常担忧，不过根据一项新的研究表明，这情况已经发生了，而且已经持续了上百年。