In the days of the Mayas, cenotes – deep, natural pits on the Yucatan peninsula - provided the only means of obtaining drinking water. But in the mythology of this advanced civilisation, these waterholes and caves were also the entrance to Xibalba – the underworld.
The greatest adventure of his life begins for Checker Tobi on a pirate ship in the middle of the sea. There he discovers a message in a bottle containing a riddle. If he solves it, he will reveal the secret of our planet. An exciting scavenger hunt around the world begins! Tobi climbs the crater of...
Tuna are among the top predators in the oceans. But the hunter is also the hunted: many species are overfished. Can we use the riches of the oceans without destroying them?
