In Guild Wars 2，there's a huge amount of underwater combat in it’s upcoming MMORPG. You are able to explore underwater all without stressing about drowning. When you dive underwater, a breathing apparatus is instantly put all up on your face.

When you’re underwater, you needn’t to worry about breathing. When your health goes to zero you go into a drowning state, which functions like the downed state you experience when above water except with some small ability to move. When you are drowning, you have three ways to recover:
You kill an opponent, which will cause you to rally.
An ally can revive you, just as they can above water.
You reach the surface of the water, where you will stop drowning and regain health. When your health bar fills all the way you’ll be revived.

If you just need to cross a body of water to get to the other side, you can swim at the top of the water without diving below. While swimming on the surface you can’t fight and it’s the same for any enemies lurking below the surface.
When you dive below the waves, you will automagically switch to your underwater weapon sets, your underwater skill setup, and your breathing device.

The world of Tyria is a beautiful, dangerous place, with a ton of places to explore. you’ll experience the full—ahem—depth of Guild Wars 2 content underwater. In addition to a wide variety of dynamic events, most dungeons have underwater content, and your personal story will also occasionally take you under the sea.

There are a bunch of new weapons that you can use only underwater. This opens up a whole new spectrum of skills and tactics that you can use underwater and really distinguishes the feel and pacing of underwater combat from land combat.
Let’s take a look at the pointy underwater weapons:
Spear: Close-quarters melee weapon
Trident: Long-range magical weapon
Harpoon gun: Long-range mechanical weapon

Of course, there is more to your skill bar in Guild Wars 2 than just your weapon skills. The skills in slots 6 through 10 automatically change to underwater skills. As you might imagine, not all your land-based utility, heal, and elite skills work underwater, there will come up with some really cool underwater equivalents of these skills.

The underwater experience in Guild Wars 2 is going to be a vital, important part of the game. You can’t experience everything the game has to offer without getting wet, so grab a breathing device and a trident and hit the beach! Life is much better down where it’s wetter, under the sea.