Common Sense Note
Parents need to know that this educational/reality show about oceangoing explorers/treasuer seekers, while interesting, is more focused on how much money can be made on the finds than on their historical significance. The featured company has been in trouble with the law over what they've recovered, and the line between what makes a recovery appropriate vs. inappropriate is a little on the blurry side. But there's no language, sex, or violence to worry about, and tweens who dream of treasure hunting may find it interesting.
There are no bleeps, but one word that sounded like "f--k" got slurred over at one point.
While exploration and the use of science are important elements of the show, the importance of the finds is almost always described in terms of monetary profit ("a billion dollars' worth of gold and silver") rather than their historical/educational signficance. The explorers do stay on the right side of the law, but the narrator mentions upfront that the crew members have been criticized as crass treasure hunters -- a criticism that goes unanswered. There also seems to be little, if any, concern about preserving the sites for archaeological purposes or reference to the fact that these were sites where human beings died.
The crew's primary motive seems to be profit, with learning a side benefit.
Drugs / Tobacco /