More holes than a sieve

Rating: 5/10 (23 February 2019)

We watched this movie due to the high scrore and were disappointed - the 5 stars is only for a couple of genuinely great scenes and good performances - otherwise it's a 2.
Blind creatures from nowhere with supersonic hearing but can't hear breathing or heartbeats (even when a human could due to proximity). Where does the power come from (no solar or turbines either)? Why are they living where they are, out in the open? Why not live nearer to the waterfall? A baby?? It wouldn't happen it would be certain death for them all (and what happens when that single O2 bottle runs out)? What about snoring, farting, creaky floor boards, talking in sleep (I'm sure none would have had nightmares) - how would they even harvest?? The list goes on with an almost continuous string of contradictions.
Not a fan.