For organisms that calcify, it (ocean acidification) will be much harder for those into the future to build their shells.

It also means reproductive health, the life stages of the marine organisms may be impacted.

What that means is that the whole tropic chain, the whole food web is impacted from the bottom to the top, and we have no idea how that will play out.
— CSIRO senior research scientist Dr Andrew Lenton

Read more about the effects of ocean acidification as our climate warms here -->