What is "qalupalik"

Qalupalik is an Inuit mythological creature. It is a human-like creature that lives in the sea, with long hair, green skin, and long fingernails. The myth is that qalupaliks wear an amautiit (a form of pouch that Inuit parents wear to carry their children) so they can take babies and children away who disobey their parents. The story was used to prevent children from wandering off alone, lest the qalupalik take them children in her amautik underwater and keep them forever.
Qalupaliks are said to make a distinctive humming sound; therefore, they can be heard before they appear.