I can't give much info unfortunately, as I only saw a little bits of episodes when I did see it, but now I suddenly remembered it and would like to properly look into it. I saw it somewhere around late 90's, possibly early 2000's and couldn't speak English at that time, was on Cartoon Network or Nickelodeon or something... The certain thing I do remember, is that it had some sort of magic necklace that shot out beams of light. In one scene, the kid wearing it was chained/tied to a wall from his wrists with leeches or something on his arms, and used the necklace to shoot them off. There might've been a ship they used to move around in a jungle, but I'm not too sure of it.