Books

Read Kenna's latest: Octopus X: How a Discovery Challenged Everything We Know About a Species

Cover image of Octopus XIn Kenna’s upcoming book, Octopus X, published by Princeton University Press on February 2, 2027, discover the story of the Larger Pacific Striped Octopus (LPSO): a creature so strange and misunderstood that for decades, many scientists refused to believe it existed at all.

Once dismissed as myth, this octopus defied everything we thought we knew about octopuses: it lived in groups, mated beak-to-beak, and even laid multiple clutches of eggs without dying. At the center of this octopus’s rediscovery is citizen scientist Arcadio Rodaniche, a Panamanian diver and artist whose groundbreaking work on the LPSO in the 1970s was rejected, buried, and nearly forgotten, until a new generation of researchers brought his findings back to light nearly 30 years later.

In Octopus X, Kenna weaves science, history, and human persistence into a gripping narrative that ranges from the hunt for the octopus off the coast of Panama to the dimly lit shelves of the Smithsonian Archives to the bubbling tanks of octopus pet-keepers. Through the book, she explores what makes the Larger Pacific Striped Octopus so unique and how one man’s persistence changed the field forever.

Octopus X is an underdog story about the power of citizen science to challenge who gets to decide what becomes accepted scientific fact, shedding light on how discoveries are credited or dismissed and how a scientifically nameless species can reveal a previously hidden world of octopuses.

Praise for 'Octopus X'

"This is the book I’ve been waiting for! At last: the riveting, true story of the most extraordinary octopus in the world, and of the maverick scientist whose findings were dismissed for decades. Brava to Kenna Hughes-Castleberry for unearthing in vivid, compelling detail the love and work, the infighting and egos, the drudgery and drama of field science—and for giving Octopus X and Arcadio Rodaniche the place they deserve in the annals of discovery."
Sy Montgomery
author of 'The Soul of an Octopus'
“A magnificent exploration into one of the world’s most intriguing creatures.”
Adrian Tchaikovsky
author of the bestselling 'Children of Time' series
“If you think you know octopuses, think again. Kenna Hughes-Castleberry tells the riveting story of an octopus that doesn’t play by the rules. Beyond the tale of one maverick species, this book shines a light on how much there is still to learn about the ocean. Compulsory reading for the octo-curious.”
Helen Scales
author of 'What the Wild Sea Can Be'
“Octopus X is a love letter to every so-called amateur who turned out to be right. Hughes-Castleberry takes a story science nearly threw away and turns it into one that readers won’t forget.”
Warren K. Carlyle IV
founder of OctoNation
“A beautifully written account that weaves together the lives of octopuses and the scientists studying them, offering a rare and compelling lens on their hidden worlds.”
Alex Schnell
National Geographic Explorer