It's in the can!
You could say Mecha Shark pays homage to Mechas, the metal beasts we see in Kaiju films. Some would say it is nothing more than a glorified submarine. There is a new megalodon in the neighborhood and the army thought they’d use stainless steel to fight it this time around. The creators are still playing the whole thing straight, refusing to embrace comedy no matter how ridiculous things get.
We’re served a romantic story we never buy; perhaps because everything, here, is so superfluous. Dialogue ranges from sleep-inducing to downright atrocious; something this franchise has been known for since the first film. Honestly, the only interesting thing, in this movie, is Mecha Shark’s design. It is cool as hell and gets cooler when it morphs. It’ll get your inner child excited!
Transitions between different shooting locations are abrupt, and, as a result, we sometimes forget where the characters are located. People sometimes move from one site to another too quickly, too easily, and it gets disorienting. The last act contains a couple of surprises. Some hit, some miss, but the conclusion is a memorable mixture of creative twists.