Hm. Any volunteers for a Near Death Experience in the shower? 
I’m sure Broomstick could provide you with more information than you wanted to know!
Like, what do you want to know, huh?
Yeah, water could “drill” through a corpse. The intensity and focus of the spray counts for a lot - the more dispersed the spray the less likely this will occur.
Water soaked corpses have their own unique quirks - like when the epidermis rots off and you’re left with the lower tissues, which in these circumstances usually appear bleached-out white, even when the person in question is quite dark skinned. Heated water basically makes stew - not much different than putting meat in a crock pot, really. Cold water will tend to slow down decay.
Hair really tends to last - it’s one of the last things to decay.
Then there’s the phenomena known as “coffin wear” - when vibration wears away at a corpse, leaving interesting defects that have, at times, been misinterpreted as foul play.
Then there’s saponification…
There are several books written by forensic pathologists but intended for the lay public that are filled with oodles of oozing detail. Want titles?
As for pictures - well, if you MUST look there are many websites out there that exist purely for shock and horror. I usually go to Rotten, but there are others as well.