Presently, however, these mitigating effects are mixed due to intense diel cycling of CO2 driven by aerobic metabolism. (news-oceanacidification-icc.org)
Much of the deep ocean can replenish (often just barely) the oxygen consumed during these mass migrations, which are known as diel vertical migrations (DVMs). (sciencedaily.com)
I recommend Final Fantasy XI - Music from the Other Side of Vana «diel in the same manner which I would recommend Chrono Trigger — The Brink of Time. (rpgfan.com)