I Actually Like It...
A survival tale of a family on a boating trip in the Carribean...
The apocalypse in this film is understood by the characters to be a geologic polar shift and a staggering displacement of the oceans... Better to accept it as something of a supernatural apocalypse because of any number of problems with this (The scale would be beyond imagining, no boat could survive to be found on a mostly dry landscape - just for starters.) BUT...
This movie works if you accept the situation and simply assume that most of the explanations are just the best these people could conceive. Think, as I did when we first see the position of the boat after the initial event - On a routine expedition... They encountered the greatest earthquake ever known... And it swept them down to the Land of the Lost.
The movie looks great and the effects were good enough. The acting was fine. The characters were written believably and if you want to criticize some of their decisions, remember people react differently to stress and the end of the world as we know it is probably pretty stressful.... Oh, and there are monsters- sorta.