Manatee vs Dugong

Manatees and dugongs are the two living groups of sea cows, plant-eating marine mammals that look alike at a glance. The Natural History Museum in London notes they are similar in size and coloring and both have flexible flippers. Even so, a clear look at the tail, or simply the ocean you are in, answers the question fast.

Manatees live in the Atlantic, the Caribbean and the Amazon, with three species worldwide. Dugongs live only in Indo-Pacific waters, from East Africa to Australia. Sources vary a little on finer points like snout shape and tusks, so this page leans on the tail and location first, then on the other cues.

Manatee vs Dugong side by side

Last verified October 2026. Typical values; individual animals, products and local prices vary.

When you are looking at which

Manatee

• The tail is a broad, rounded paddle with no notch in the middle.
• You are in Florida, the Caribbean, the Amazon basin or the Atlantic coast of West Africa.
• The animal is in a river, spring or freshwater canal rather than open salt water.
• The skin looks wrinkled and there are no tusks showing.

Dugong

• The tail has two lobes with a notch between them, similar to a whale's fluke.
• You are near East Africa, India, Southeast Asia or Australia in the Indo-Pacific.
• The snout is long and points downward, built for rooting along a seagrass bed.
• The skin looks smooth, and tusks may be visible.

How this works

The quiz asks five questions that match what a visitor can see or know: tail shape, where the animal was, skin, tusks and water type. Each answer scores for manatee or dugong, and the side with more answers is the result.

Tail shape and location are the firmest clues. Skin and tusks can be hard to see from a boat, and the freshwater question only helps if the animal was clearly in a river or spring. Photos taken from a boat or a viewing platform often show the tail only briefly, so a second look helps.

Where these numbers come from

The figures and defaults on this page are based on:

• Natural History Museum (London): What is a sea cow?, Tail difference, separate ranges, shared size and coloring. (checked October 2026)
• Save the Manatee Club: Manatee FAQ, Manatee size, paddle tail, freshwater needs, diet, and dugong comparison. (checked October 2026)
• Everything Manatee: Dugong vs. Manatee, Snout shapes, saltwater-only dugongs and Indo-West Pacific range. (checked October 2026)

Field-identification guide. Sources differ on some finer details, so rely on tail shape and location first.