On: Humans are more dependent on water than many other...

[Scaevolus]

Pruney fingers are a general primate adaptation, and likely have more to do with not slipping from trees when it rains than any serious aquatic phase.

[scotty79 → Scaevolus]

Not that general. The only other species I can find mentioned to have pruney fingers are macaque monkeys.

And we are unsure if that's a remnant of common ancestor or a parallel evolution.