A Water Motorbike You Can Ride on the Sea
Puzzle 15 of Stay Cool Piece of Cake Pack
Question is: A Water Motorbike You Can Ride on the Sea
and the answer is: JETSKI
Word Meaning:
JET SKI — A small motorized watercraft with a flattish hull and an upright centre, which a rider sits astride.
Definitions from Wiktionary.