What did karana MAKE OUT OF Sea elephant teeth?

Karana, from the book "Island of the Blue Dolphins," made tools out of sea elephant teeth.

Specifically, she used them to:

* Make a knife: She sharpened a tooth to create a blade.

* Make a spear point: She shaped a tooth into a sharp point for her spear.

These tools were essential for her survival on the island, allowing her to hunt and defend herself.