An amateur diver made a historic find when he came across human remains in the waters off Venice. They turned out to be from a Native American graveyard that is more than 7,000 years old. Florida Secretary of State Ken Detzner told the Tampa Bay Times the findings at the Manasota Key offshore site are “unprecedented.” The gravesites are located on the continental shelf in offshore waters, where, according to a release from the Secretary of State’s office, the human remains appeared to have been “preserved in a peat-bottomed freshwater pond.” Researchers are said to be working closely with the Seminole Tribe of Florida to ensure that the remains are cared for while a preservation plan is constructed.