This is a decent video explaining some of the background on why polling got worse from business insider. Essentially it has more to do with conservatives being underreported (they don’t like talking to pollsters) then Gen Z, Millennials, or Gen Xs. Not saying that didn’t play a part, but Nate Silver has talked about this as well in his Silver Bulletin.
Not all care, but it still impacts them.
Rhythms at the bottom of the deep sea: Cyclic current flow changes and melatonin patterns in two species of demersal fish
Beyond this, the diurnal cycle does filter down into the disphotic zone and does influence species. It does weaken with depth.