Welcome to the hidden, squirming world of parasites—some of the most misunderstood creatures with whom we share the Earth (and our bodies).

'Astonishing, eye-opening, and inspiring.' —Chloe Dalton, author of Raising Hare

There is the tapeworm, which can grow 120 feet in length within the gut of a whale; the tsetse fly, a notorious vector of disease that can pierce the skin even of crocodiles with its needle-like mouth; and the most universal symbol of parasitic behavior—the leech. Long villainized as, well, parasitic, these creatures are actually a vital part of every ecosystem—and Dr. Dino Martins, an award-winning entomologist and biologist from Kenya, has made it his life’s mission to demystify these beguiling beings.

Hidden Creatures is a journey around the world ten times over—from Martins’ home in the wilds of East Africa, to the rainforests of the Amazon, to cities and backyards across the globe—and along the way, we encounter the brilliant and eccentric experts who join Martins on his adventures to investigate not only parasites but their hosts, from hyraxes and hippos to, of course, humans. Immersive, driven by an utterly infectious curiosity, and sure to transform every reader’s understanding of these organisms, Hidden Creatures has the magnetic force of a David Attenborough documentary and introduces a monumental, charismatic new voice in science writing.

Cover image: Hirudo medicinalis (leech) by Paul Pfurtscheller. © Werner Anselm Buhre.