I'd seen turtles in the wild in Samoa from a boat (on the Namua post), as well as while scuba diving. I also saw turtles in captivity, which I recently posted pictures about (on the underwater post).
The captive turtles seem somewhat legit - they're covered on the Samoa Tourism Authority website (here).
Here's some additonal reviews and mixed opinions on the turtles in captivity, on the TripAdvisor page.
Here are two videos of me with the turtles! Enjoy!