Crash Bandicoot: The Wrath of Cortex - Level 10: H2 Oh No (Crystal/Gem)

This is the last (main) water level in the game, and a bit of a cool one.

Like the Earth-based Compactor Reactor level, this level is also a factory Crash must first venture into before venturing through it. Since this factory level is Water-themed, Crash finds it with his Yellow Submarine in an underwater cave. That's only 1/3 of this level. The other two-thirds are on foot.

On foot, all of the water that can go up to Crash's waist is harmful, as it is a different color and electrified. There's normal deep water in the Bonus, but don't fall in it as Crash will drown THE VERY INSTANT his head is underwater. No 1-second delay before then like what could happen in Jungle Rumble. How PATHETIC!

Take a look at my Bonus fail at 4:06 and see what I mean.
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H2 Oh No is a more straightforward level compared to Compactor Reactor, besides the submarine section, that is, since there's no second gem to get out of this level. Just get both its Crystal and its one Gem and you'll be done with it for now.

If this was the last Crystal you needed to get for the Water Chamber, get ready for Round 2 against Crunch as he's prepared to fight you using Wa-Wa's power.