It'll be down in no time flat and you'll earn the Jabberwock Horn to use for the bait. After you get all the required materials, craft the Legendary Bait and head to Off-Limits Beach in Costa del Sol.

How To Craft Legendary Bait x1 Great Malboro Tendril x1 Jabberwock Horn x5 Pearl Ginger Root The Great Malboro Tendril and Jabberwock Horn are obtained from completing the Gongaga and Cosmo Canyon ...