Inlessoxygenatedwatersthere's lesslifeatthebottomoftheocean, meaningyourcorpsecanpotentiallyremainindecentconditionfor a monthormore.
However, ifyousinktothebottomwithin a hundredorsomilesfromshore, youcanexpectthatthere'llbenothinglefttorecoverofyouexceptsomeperfectlybleachedbonesafterjust a week.