Contrived with wooden performances, some a bit over the top, which could be also attributable to the shallow dialogue and poorly written script. Predicable situations. No real likable characters but maybe one or 2. The cgi of the existent prehistoric denizen is distracting and laughable, reminiscent of a made for SciFi movie. Sometimes imitation (to "Lost"/"Manifest") isn't always the greatest form of flattery. And I may be wrong, but were bunny rabbits actually in existence back in 10,000 years BC? And here's something to ponder, can you really expect someone underwater to actually hear you calling them?