Spotting Fish, With a Face Mask and Breathing Tube
Puzzle 5 of Buying Books Piece of Cake Pack
Question is: Spotting Fish, With a Face Mask and Breathing Tube
and the answer is: SNORKEL
Word Meaning:
SNORKEL — (underwater diving) A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
Definitions from Wiktionary.