With adventures on five continents, Dragon Songs is his account of this quest. It includes an escape from a boiling lava lake in the Afar Desert, being chased up a tree by a tiger in India, hitching a ride with a cocaine smuggler in Bolivia, and diving with giant Greenland sharks—all in the name of studying crocodiles, among which he routinely paddled in his inflatable kayak. Of course, not everything went according to plan. But, in the end, his ground-breaking research helped change the field. And during the course of his adventures, he met and courted his future wife.