When I saw this at my local shop I bought it for two reasons, it was very cheap for being a real 3D but most of all it was the new Brian Yuzna flick. I knew him from the follow-ups of the Reanimator franchise so I knew he could make some gory flicks.
Looking towards the cover of the Blu ray it was clearly a rip-off of Piranha 3D and Piranha 3DD. Don't ever think that you will see that shot somewhere in Amphibious. It even goes a bit further on the negative kind. It has an SyFy or The Asylum overlook. This isn't a straight horror it's a pure creature feature but one of the CGI kind and making it more ridiculous is the fact that it's prehistoric.
I can dig the settings but I wasn't satisfied with the gore or horror. There isn't that much in it but when it does it's okay and even a bit gruesome but in fact it's more about saving children who are working as slaves on some kind of fishing thing. Of course Skylar (Janna Fassaert) do search for prehistoric life and so it comes that the creature is found but it also has to do with black magic.
You don't watch it for the acting because some acting is wooden as hell, Fassaert is okay but still it could have been a SyFy flick. Rather disappointed for a Yuzna flick.
On part of the 3D that was okay. If you watch it 2D you never will have the feeling that some shot were done for 3D. The 3D works now and then rather good and it does work throughout the whole movie. Shark Night 3D (2011) for example was only in 3D when there was action of the shark.
Guess a lot will hate Amphibious, pure for the creature freaks. Maybe the best thing was the start of the movie with the couple going for a swim, that delivered some good moments.
Gore 1,5/5 Nudity 1/5 Effects 3/5 Story 3/5 Comedy 0/5