Large gates are obstacles that block your path but they can be opened. This guide on How To Open Gates In Maneater as these huge gates can be found very early in the game, but the game doesn’t do a great job of explaining how you open them – which is something available towards the latter parts of the adventure.
These are very specific gates, there are only a few. These are not the gates that require Adult or Elder to break, those are opened simply by attacking them when you are a shark of appropriate age. These are the huge mechanical gates. When you first encounter one, the game explains that you can hit the switch to open the gate. However, that’s all the information it gives you. Once you’re an adult you can actually jump these gates pretty easy so they are relatively pointless, but here’s how to open them nonetheless.