I don't typically write reviews. Slight Spoilers Warning!!!
However, this film felt incredible. It is a zombie meets shark meets animal lovers, meets gore, meets post-apocalyptic ending.
The plot twist of this movie is revealed more than halfway through, which was slightly too long for my taste, but still worth the wait.
The only reason this gets me 4 instead of 5 stars is the unnecessary deaths of many good characters, and the main human antagonist could have suffered more than she did. Also, the character development is pretty scuffed.
The first massacre at the start was quite thrilling, the second one was kind of ridiculous as many good characters were killed, and the 3rd massacre marked the start of the end of the world.
Overall, I recommend you watch this movie if you are not too picky of a Shark film enthusiast.