Watcher (Barotrauma)

The Watcher is an enormous, orb-shaped creature reminiscent of a turtle or a crab. Named after its massive, ominous red eye, the Watcher lacks any true method of attack, but does inflict many negative effects in the form of something called "The Watcher's Gaze" when investigating submarines or divers.

Biology
The Watcher consists of a jet-black main body of immense size that takes the shape of a sphere, and is surrounded by thick armor and protective spikes, giving it great resistance to almost all forms of damage, but this is balanced by its exposed paddles and large, vulnerable eye. Watchers are completely deaf, and rely entirely on their impressive sight to find objects of interest such as submarines or divers. Watchers are solitary and always found alone, and have no special interactions with each other.

Behavior
Watchers are passive but inquisitive creatures: despite having no desire to attack other creatures, Watchers will still approach submarines to gaze at human activities. While the Watcher's passive behavior is a pleasant contrast to the other denizens of Europa, its effect upon the human mind with its deep gaze means you unfortunately have to deal with it in some manner, usually violence.

The Watcher constantly emits a loud, distorted "static" that is completely alien to all other sources of sound, making it easy to hear if one is nearby.

If in danger, the Watcher will flee and deploy a green acid mist behind, which inflicts Burns to divers and damages submarine hulls.

The Watcher's Gaze
"The Watcher's Gaze" is an affliction that crew members get when a Watcher is nearby. The only cure is to gain distance from the Watcher and wait for the effects to subside.

The Watcher's Gaze has two distinct stages of intensity, applying multiple other afflictions such as psychosis and nausea.

The two stages will be referred to as "Indirect" and "Direct", both cause varying levels of the aforementioned afflictions.

The "Indirect" stage normally occurs when the Watcher is outside a submarine with a human being inside, this stage applies minor nausea and psychosis.

The "Direct" stage most often occurs when a human being is outside with a diving suit on and the Watcher approaches to observe them. This stage is much more extreme, involving heavy nausea, vomiting, and psychosis. It should be noted that while this affliction by itself is harmless, the extreme vomiting that comes from it will slowly damage the stomach and other organs