Zillah Bethell Holidays might still be off limits but there’s no stopping youngsters setting sail for the far side of the world and an adventure in the shimmering seas of beautiful Papua New Guinea. The Shark Caller is the fantastic middle-grade novel from Zillah Bethell who was born in the shadow of the volcano Mount Lamington in Papua New Guinea and has used her amazing childhood experiences for a moving tale of friendship, forgiveness and bravery. Bethell grew up without shoes, toys or technology and, as a result, spent a lot of time swimming in the sea and sailing in canoes, occasionally earning money by taking tourists gold-panning in the highlands of Wau and Bulolo.