Manatee

Manatee at a glance

Need to know

• Manatees, also called 'sea cows,' are large, slow-moving aquatic mammals.
• They are strictly herbivorous, feeding mainly on aquatic vegetation.
• All species are vulnerable according to the IUCN Red List.
• Manatees have no natural predators, but humans are their biggest threat.
• Florida manatees migrate with temperature changes, sometimes traveling hundreds of kilometers.
• Manatees use their stiff whiskers (vibrissae) to feel and manipulate objects and food.

About the Manatee

Manatees are gentle, slow-moving marine mammals found in shallow tropical and subtropical waters of the Americas and Africa. With their stout bodies, paddle-shaped flippers, and distinctive rounded tails, they are perfectly adapted for an aquatic herbivorous lifestyle. Often called 'sea cows,' manatees graze on a variety of aquatic plants and play a crucial role in maintaining healthy aquatic ecosystems. Despite their large size, these mammals are threatened by habitat destruction, boat collisions, entanglement, and pollution. Conservation efforts are ongoing to protect the remaining populations and ensure their survival for future generations.

Physical characteristics

Size: Typical adult: 2.7-3.5 m; maximum up to 4.6 m. Weight: Average 400-500 kg; maximum recorded up to 1620 kg. Lifespan: Average around 30 years, can live up to 60 years.

• Paddle-shaped forelimbs (flippers) with vestigial nails
• Large, rounded, horizontally flattened tail
• Wrinkled, whiskered face with flexible upper lip
• No visible neck (body tapers directly into head)
• Sparse, fine hair on a thick, grey to brownish skin

Notable species

• West Indian Manatee (Trichechus manatus) — Vulnerable. Shallow coastal waters, rivers, and estuaries Regions: Caribbean Sea, Gulf of Mexico, Atlantic Ocean coasts of Florida, Amazon River estuary, Orinoco River delta.
• Amazonian Manatee (Trichechus inunguis) — Vulnerable. Lakes and slow-moving rivers in the Amazon Basin Regions: Amazon River, Rio Negro, Madeira River, Purus River, Lake Amanã.
• African Manatee (Trichechus senegalensis) — Vulnerable. Coastal estuaries, rivers, and lagoons along West Africa Regions: Senegal River, Niger River, Lake Volta, Gambia River, Coastal West Africa.

Habitat and range

Original range: Coastal, riverine, and wetland systems of the Caribbean, West Africa, and Amazon Basin

Current distribution: Still present throughout the Caribbean, Gulf of Mexico, West African rivers/lagoons, and much of the Amazon river system, but with reduced numbers and fragmented distribution

Preferred environments: Shallow coastal waters, Rivers, Lagoons, Estuaries, Floodplain lakes

Regions: Caribbean Sea, Gulf of Mexico, Atlantic Ocean coasts of southeastern United States, Amazon River, Rio Negro, Madeira River, Senegal River, Niger River, Lake Volta, Coastal West Africa

Where to see Manatee

• Crystal River, Florida — November to March. A renowned wintering site with clear springs where manatees congregate.
• Lake Amanã, Brazil — June to November (dry season). Remote Amazonian site with higher visibility for manatees during lower water.
• Senegal River Delta, West Africa — Late dry season (February–April). Best chance for elusive African manatee sightings.

Behavior and diet

Diet: Primarily aquatic plants such as seagrasses, water hyacinth, and various freshwater vegetation.

Social structure: Solitary or found in small, loose groupings; mother-calf pairs are the strongest social bond.

Communication: Use a combination of vocalizations (chirps, squeaks, and whistles), touch, and visual cues to communicate, especially between mothers and calves.

• Frequent browsing and grazing for 6–8 hours daily
• Migratory behavior in response to water temperature
• Slow, graceful swimming combined with long periods of rest
• Surfacing for air every few minutes, but can stay submerged up to 20 minutes

Interactions with other animals

• Alligators/Crocodiles (Neutral): Manatees usually coexist peacefully with alligators and crocodiles, sharing similar habitats but rarely interacting.
• Humans/Boats (Predator (accidental)): Boat collisions are the leading cause of manatee mortality due to their slow movement and need to surface frequently.
• Fish (like Remoras) (Commensal): Remora fish sometimes hitchhike on manatees, feeding on parasites on their skin.

Conservation

IUCN Red List status: Vulnerable

Threats

• Watercraft collisions
• Habitat loss and fragmentation
• Entanglement in fishing gear
• Pollution and harmful algal blooms
• Hunting (in some regions)

Conservation efforts

• Boat speed restrictions and protected zones
• Habitat restoration and conservation
• Rescue and rehabilitation of injured manatees
• Public education and awareness campaigns

How to help

• Obey posted speed zones and watch for manatees while boating
• Support and donate to scientific research and conservation organizations
• Promote healthy waterways by reducing pollution and chemical runoff
• Advocate for the protection of wetland and estuarine habitats

Manatee facts for kids

Manatees are big, gentle sea animals that swim slowly in warm rivers and ocean waters. They eat lots of plants and have funny whiskered faces. Manatees need our help to stay safe from boats and pollution.

• Manatees are sometimes called 'sea cows' because they graze on water plants.
• They can hold their breath underwater for up to 20 minutes!
• A manatee's closest land relative is the elephant.
• Baby manatees are called calves and stay with their moms for up to two years.
• Manatees don't have any natural predators—only humans are a real danger.

Did you know? Did you know manatees use their whiskers to feel around and pick up food, almost like having tiny fingers on their lips?

Watch & learn

• Gentle Giants: Manatees of the Crystal River — National Geographic. A close look at the peaceful lives and conservation of Florida's manatees, with stunning underwater footage and insights from wildlife experts. National Geographic explores manatee habitats and pressing threats they face.
• Sirenians: The Story of Manatees — PBS Nature. This documentary follows these slow-moving marine mammals in their natural habitats, featuring rare footage and highlighting efforts to save the endangered Trichechidae from extinction.
• Manatees: Secrets of the Sea Cows — Smithsonian Channel. This in-depth program reveals surprising facts about the biology, behavior, and conservation challenges facing manatees, featuring expert interviews and charismatic encounters in both the wild and sanctuaries.
• The Life of a Manatee: Underwater Mammals at Risk — BBC Earth. Explore the gentle lives of manatees through beautiful cinematography, delving into their ecology, family bonds, and the dangers they face from humans and the environment.
• Manatee Rescue: Saving Sea Cows — Nat Geo Wild. Join conservationists and veterinarians working tirelessly to rescue and rehabilitate injured manatees. This riveting segment details hands-on action and tells individual stories of survival.