Warmer waters, in turn, mean less oxygen. This double whammy severely hurts many marine creatures, like coral, but not jellies. In mid-latitudes, in fact, higher water temperatures lead jelly embryos and larvae to develop more quickly, and the animals enjoy longer reproductive periods, according to Inside Climate News.
Jellies are already good at reproducing. A breeding female nettle, for example, can spawn 45,000 eggs per day, according to Smithsonian Magazine.