A Note Before You Begin

This book is about crocodilians. That word covers an entire ancient family (crocodiles, alligators and caimans) and across the Americas it takes in a whole cast of them: the American alligator, the American and Morelet’s crocodiles, the rare Cuban and Orinoco crocodiles, and the caimans, from the widespread spectacled caiman to the great black caiman of the Amazon. Two of them, the American alligator and the American crocodile, share more water’s edge with more people than any of the others, so they appear in these pages most often; but whenever you read “crocodilians” here, picture the whole family, because the rules that keep you alive are the same for every one of them. Every one. It is written for the people who share territory with them: who live, work, fish, hike and vacation in the country these animals call home. You can share the water with them from a boat. Never with your body. There is no place and no moment where it is safe to have your body in the water at the same time as one of these animals. You will sometimes see a trained professional appear to break this rule. People like Chris Gillette, a Citadel Culebra faculty member who has spent more than twenty-five years working with alligators, at times in the water beside them. It only looks like a contradiction. Handlers like Chris understand these animals at a level almost no one else ever will, and what you are watching is decades of hard-won skill and carefully managed risk. Nobody copies that off a screen. For every ordinary person, without that training, the rule stays absolute: your body never shares the water with a crocodilian, ever. They differ in size, in temper, and in name, but the rules that keep you alive never change, wherever you are and whichever one you face: stay out of their reach.

This book was finished in the days after two deaths, barely forty-eight hours apart, on opposite shores of one sea. On 26 June 2026 a twenty-eight-year-old man, Irving Mauricio, was taken by an American crocodile off a marina beach in Puerto Vallarta, Mexico. On 28 June a thirty-one-year-old woman, Brittany Clark, died after an alligator seized her while she swam in a river in Seminole County, Florida. Neither was a monster. Each did exactly what its kind has done for millions of years, in water that people had come to think of as ordinary. This book is written so that fewer families have to learn, the hardest way, what these animals are and what they can do.

Its focus is the crocodilians of the Americas: the American alligator of the southern United States, the American crocodile that ranges from the tip of Florida through Mexico, Central America and the Caribbean, and the caimans that hold the wetlands of Central and South America. These are the animals that share more water’s edge with more people every year: in backyards and canals, on golf courses and lake shores, along marina beaches and mangrove coasts, on Amazon riverbanks and Caribbean lagoons. Ordinary places. The wider world’s crocodiles appear in these pages too, including the true man-eaters of Africa and Asia, but this book is mostly about the animals that people across the Americas actually live beside. This is one of three regional field guides in the Croc & Gator Wise series. The other two go deep on the crocodilians of Africa and of Australasia and Asia, and the animals you only brush past here get their full account there. If one of them takes hold of you, that is where to follow it.

It carries one message above all others, and that message is simple enough to teach a five-year-old: in crocodilian country, you cannot tell by looking whether the water is safe. Not ever. Forget fighting one of these animals, and forget outrunning one. Spotting one in time is not something you can count on either. The skill that keeps you alive is behaving so that you are never tested at all.

Across every place these animals live, the official safety message is the same, and it is short and absolute: assume that any natural body of water in crocodilian country may hold a large, dangerous animal, and only enter or swim where there is a sign telling you it is safe. Florida’s wildlife agency says exactly this, and Australia’s Northern Territory built an entire public campaign, “Be Crocwise,” around the very same idea. Same rule, two hemispheres. Everything in this book is built on it.

You will also find, woven through these pages, an argument that goes beyond safety. Crocodilians are magnificent survivors, and they have earned their place in a world we keep trying to tidy up. Learning to live alongside them is our job. Not the animal’s. It falls to us because we are the species clever enough to choose how the story ends.

If you remember nothing else

If a waterway is not signposted as a designated safe swimming area, treat it as crocodilian habitat. No exceptions. Not the clear ones, not the shallow ones, not the ones the locals “always” swim in, not the ones that looked fine yesterday.