Drowning is almost always a deceptively quiet event. The waving, splashing, and yelling that dramatic conditioning (television) prepares us to look for, is rarely seen in real life.
Madness string 101841
When the Menji government banned Samurai from openly carrying swords, many resorted to concealed blades disguised as bamboo poles, wooden walking sticks, and human spinal columns, all of which could be carried in public without causing suspicion.