Scooby-Doo and the Sunken Ship by James Gelsey
Scooby-Doo and the gang are excited about a beach party at Sandy Cove. But rumours of a pirate's hidden treasure have the locals acting fishy. When the pirate's ghost shows up to claim his treasure, the whole town is spooked. Ahoy! It's up to Scooby and friends to catch the greedy ghost!