Grand Prize: a $2,000 check toward airfare to/from and accommodations in San Diego, California; and a shark diving experience for two with Islander Charters. ARV of the Grand Prize: $7,965.

Open only to legal residents of the 50 United States and D.C. who are 21 years of age or older as of the Promotion start date.

There is a limit of one entry per eligible person, per Entry Period, on the Website, and one entry per eligible person, per Entry Period, on Twitter, for a total of two possible entries per Entry Period.

Must tune in to Discovery Channel’s Josh Gates Tonight which airs at 11:00 p.m. ET and 11:00 p.m. Pacific Time. Provide the correct answer to the trivia question relating to that night’s episode.