Couple times a day for me, but I think many here rarely do. There seems to be a lot of stinky people here. Lack of deodorant, proper clothes washing, lack of underwear change a urine smell.
Add; bad dirty teeth, bad breathe, messy hair, unkempt old clothes.
Just a general unclean appearance not surprising people think they don't shower.
Also, thinking a pool or ocean is like a shower? A pool is full of chemicals if you don't shower you will smell. And, the ocean is full of salt, garbage and sewer remnants people actually don't shower after that? So dirty gotta stink so much.