Turtle hatching on Mafia, Hundreds of baby turtles make the instinctual move from the white sand beaches of the Mafia Archipelago to the warm water of the Indian Ocean from June to September. On the eastern beach of Juani, a pretty little island close to Mafia’s main island, you can see this nature show. After a short ride and a 45-minute walk across this amazingly green island, you’ll reach the beach where the turtle chicks will hatch and begin the next part of their lives.