. >> we kept diving, and we end up finding six coins and an e.o. -- you know, an encrusted object. >>ix coins, but still no sterncastle. the $500 million is still somewhere under all that turquoise water. >> it's always frustrating when you come back up, and you wonder to yourself, "[ sighs ] why wasn't it there? where is it? is it 20 feet away? are we gonna find it tomorrow? the next day? the next week? the next season?" >> at the end of the year, jason scored some silver coins and an 80-pound silver bar... >> this thing's not getting any lighter. >> ...worth about $140,000. so he had a blast diving and made 40 grand. but, he says, it's not for everyone. >> if you're worried about getting your money back every year, you probably should not be investing in treasure. >> for jason, it's all about the experience and the excitement. >> well, congratulations. >> thanks, sean. i really appreciate it, man. it's been a heck of a lot of fun. i've been able to have so many amazing adventures in my life, but to dive to the bottom of the ocean and find sunken treasure? wow. that's really special.