Pinniped With Wishbone Markings
Puzzle 13 of The 1950s Hard Pack
Question is: Pinniped With Wishbone Markings
and the answer is: HARPSEAL
Word Meaning:
HARP SEAL — One of species Pagophilus groenlandicus, a true seal (or earless seal) found in the northernmost Atlantic Ocean and adjacent parts of the Arctic Ocean.
Definitions from Wiktionary.