Decorative Carving and Drawing on Whalebone
Puzzle 20 of Predators Hard Pack
Question is: Decorative Carving and Drawing on Whalebone
and the answer is: SCRIMSHAW
Word Meaning:
SCRIMSHAW — To create (a small ornamental handicraft also called a scrimshaw) by carving or engraving on bone (originally whalebone or whales' teeth), ivory, or other materials.
Definitions from Wiktionary.