This Machina is highly adapted for the deep sea adaptability so it can target not only humans who have fallen from ships, but also humans in the deep-sea research and living complex. In some cases it directly captures humans, but more often it pollutes the ocean by releasing M2.<ref>Because of this, Siren's M2 is very water soluble.</ref> It is quite dangerous as drinking water as well as equipment that simply comes into contact with contaminated water can be infected with M2. | This Machina is highly adapted for the deep sea adaptability so it can target not only humans who have fallen from ships, but also humans in the deep-sea research and living complex. In some cases it directly captures humans, but more often it pollutes the ocean by releasing M2.<ref>Because of this, Siren's M2 is very water soluble.</ref> It is quite dangerous as drinking water as well as equipment that simply comes into contact with contaminated water can be infected with M2. |