Manatee vs Dugong: How to Tell Them Apart

If you are in the United States, specifically in Florida, you are looking at a manatee. Dugongs are not found in North American waters at all. This single fact settles most questions immediately. If you are anywhere else in the world and you see this animal in ocean water, check the tail. Manatees have a single, rounded tail that looks like a paddle or spoon. Dugongs have a tail that splits into two flukes, just like a whale or dolphin tail. This is the second most reliable tell. Look at the snout next. Manatees have a rounded, flexible snout with obvious whiskers. Dugongs have a snout that points more downward and looks triangular. The snout difference is visible when you look at the face directly. Learn more at /wildlife for guides.

Manatees average about 9 to 10 feet long and weigh between 800 and 1,200 pounds. Dugongs are similar in length, about 8 to 10 feet, but their bodies are more compact and muscular. A manatee looks barrel-shaped, like a floating log. Dugongs are more streamlined, more like whales or dolphins in profile. Manatees are wider and rounder overall. Their flippers are larger and more paddle-like. Dugongs have flippers that look more like a whale's flippers. The body shape difference is noticeable. Manatees look pudgy and soft. Dugongs look more athletic and hydrodynamic. This reflects their different evolutionary paths. Manatees evolved in rivers and shallow seas. Dugongs evolved in open ocean environments. When you see a manatee, it looks almost seal-like in its roundness. Explore marine mammal biology to understand these differences. A dugong looks more like a small whale or dolphin in its overall form.

This is the simplest difference. Manatees in the United States live only in Florida and the Florida Keys. A few occasionally wander to other Gulf coast states in winter, but Florida is their only year-round home in North America. Some populations live in the Caribbean and Central America. Dugongs live only in the Indian Ocean and the western Pacific Ocean. They range from the east coast of Africa through the Red Sea, the Persian Gulf, around India and Southeast Asia, to Australia. If you see one of these animals in the Atlantic Ocean or in any US coastal water, it is a manatee. Dugongs have never been documented in North American waters. The geographic separation is complete and absolute.

Manatees are generally solitary or found in small family groups. They are slow-moving and spend much of their time grazing on seagrass in shallow water. They are gentle and curious about humans, though you should always maintain distance. Manatees surface regularly to breathe and are often spotted slowly moving through shallow water. Dugongs are more social and often live in herds, sometimes of 100 or more individuals. They travel greater distances and dive deeper than manatees. Dugongs are more wary of humans and less frequently observed. Both animals eat seagrass, but they feed differently. Manatees move their flexible snouts to uproot grass from the bottom. Dugongs use their pointed snout to dig and root more aggressively. Manatees are daytime feeders. Dugongs often feed at night.

Start with location again. Are you in the United States? If yes, it is a manatee. If you are in East Africa, the Indian Ocean, or Australian waters, check other features. Look at the tail. If it is a single rounded paddle, it is a manatee. If it splits into two flukes like a whale, it is a dugong. Check the snout. A rounded flexible snout suggests manatee. A triangular downward-pointing snout suggests dugong. Look at overall body shape. Barrel-shaped and pudgy is a manatee. Streamlined and whale-like is a dugong. Check how many individuals you see together. A single animal or small group suggests manatee. A large herd suggests dugong. By combining location with these physical features, you will quickly know which animal you observed.

One persistent myth is that manatees and dugongs are the same animal with different regional names. They are not. They are separate species that evolved from a common ancestor millions of years ago. They both belong to the order Sirenia, but they are distinct. Another confusion involves mermaids. Sailors and explorers who saw manatees and dugongs from a distance sometimes claimed they were seeing mermaids. The rounded shape and surface behavior may have inspired these stories. Manatees are sometimes confused with seals or sea lions. Unlike seals, manatees have no external ears and have a different body shape entirely. People also sometimes think that Florida includes both animals. Only manatees are found in Florida. No dugongs have ever lived there. Understanding these differences helps clarify what these remarkable marine mammals actually are.