This book deals with the history of their habits and religious beliefs.
The mythological explanation of all the prevailing customs in regard to sea-mammals is contained in a tale which describes their origin: "A girl named Avilayuk refused all her suitors, and for this reason she was also called 'She who does not want to marry.' There was a stone near the village where she lived. It was speckled white and red. The stone transformed itself into a dog and took the girl to wife. She had many children, some of whom became the ancestors of various fabulous tribes. The children made a great deal of noise, which annoyed Avilayuk's father, so that he finally took them across the water to a small island. Every day the dog swam across to the old man's hut to get meat for his family. His wife hung around his neck a pair of boots that were fastened to a string. The old man filled the boots with meat, and the dog took them back to the island. One day, while the dog was gone for meat, a man came to the island in his kayak and called the young woman. 'Take your bag and come with me,' he shouted...”