Neither I, nor our average aquarist, is really all that interested in the deep science going on in this article. Certainly it is fascinating to ponder and certainly research like this often yields helpful information for us in the hobby.
I can’t say I know what this finding means for us. One thing it does suggest to my mind concerns water changes. Though the study states that the levels of Hydrogen Peroxide are not high enough to kill bacteria (remember putting this stuff on your cuts as a kid?) I can imagine that over time it builds up in the system. It’s not terribly stable stuff. It’s kept in a brown bottle for reason, light affects it.
Long and short of it, interesting study, but unknown impact on the hobby at this point, just speculation and pondering.
Corals make use of different chemical compounds during interactions with prey, predators and aggressors. Hydrogen Peroxide (H2O2) is produced and released by a wide range of organisms as part of their defense against grazers or pathogens.