Guanapipi

Appearance
A sea monster from Dreamtime.

Behavior
The monster would lurk in waters where children would come to play and fish. It then would snatch them from the surface of the water and eat them whole. An eagle would then come and regurgitate the boys, which would come out as grown men.

Origins/Human Interactions
This concept is associated with puberty ceremonies practiced by the natives. There has also been a legend that has grown from this myth. There was once a warrior found out that some boys from his tribe have been eaten by the Guanapipi. The warrior hunted it down in the lake that it lived in and cut the legs and head off. He then slit the belly open to free the children.