Not getting stared at, and fitting in, is critically important to people, in this case as in others. Should'nt be too surprising when you think about it in such terms.
Being that self-conscious about things that have happened or are out of your control is a waste of time, and that's coming from someone with a birth defect. If you're getting a prosthetic for extra freedom and usefulness, great, but getting a fake hand for the sake of a fake hand is just being vain IMHO.
sink (third-person singular simple present sinks, present participle sinking, simple past sank, past participle sunk or sunken)
(ergative) To descend or submerge (or to cause to do so) into a liquid or similar substance.
A stone sinks in water.
The sun gradually sank in the west.
(transitive) To cause a vessel to sink, generally by making it no longer watertight.
It seems to depend on where you define "sink". But i'm on necro's side, you have to draw a line between "intentional and "non-intentional sinking when in a submarine. Diving works well for intentional sinking, and sinking, in the contextvof a submarine, means losing watertightness
Is your job running? You'd better go catch it!