Fruity Nickname for the Beluga Whale
Puzzle 15 of Animals with Weird Names Hard Pack
Question is: Fruity Nickname for the Beluga Whale
and the answer is: MELONHEAD
Word Meaning:
MELONHEAD — (US) One of a group of legendary beings, known in parts of Michigan, Ohio, and Connecticut, and generally described as small humanoids with bulbous heads who occasionally emerge from hiding-places to attack people.
Definitions from Wiktionary.