One of the 4 manatees on WAnimals

Mammals · Sirenia · Trichechidae

West Indian Manatee

Trichechus manatus

Vulnerable

It faces a high risk of extinction in the wild over the medium term. See full glossary

Unlike almost every other mammal — its relatives the giraffe and the elephant included — it has only six neck vertebrae instead of seven, which stops it turning its head independently of its body.

Weight

450 kg – 1.6 t

Size

2.7 m – 4 m

Lifespan

60 years

Diet

Herbivore

Feeds mainly on plants.

Activity

Irregular activity

Active at irregular times, by day or night depending on circumstances.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Moderate

Fun facts

  • It has to turn its whole body to look sideways.
  • It eats a wide range of water plants, as many as 60 different species.
  • It lives in warm coastal waters, estuaries, rivers and canals of the Caribbean and the south-eastern United States.
  • taxonomíaFor all that it lives in water, its closest living relatives are not other marine mammals but elephants.
  • fisiologíaIt can eat up to 10% of its body weight in water plants a day, and its teeth are replaced continuously through its life as sand wears them down.

Life cycle & biology

Skeleton type
Vertebrate - internal bony skeleton (mammal)
Habitat & environment
Warm coastal waters, estuaries, rivers and fresh and brackish canals of the Caribbean and the south-eastern United States
Birth weight
~27-32 kg (60-70 lb) at birth
Size at birth
~27-32 kg at birth
Sexual maturity
Female: 3-5 years | Male: 5-7 years
Gestation / incubation
~12 months
Litter / clutch size
1 young per birth (twins rare), with some 2 years between births
Lifespan in captivity
Documented record of up to 65 years

Sources consulted: Menjelajahi Perbedaan Manatee Dugong (traducido); ScienceDirect (Amazonian manatee progesterone study); Anatomical Record (Amazonian manatee reproductive anatomy study); FWC Florida; NPS Mammals; Ocean Info (Dugong vs Manatee)

Related species

Other species in the catalogue with the most in common with West Indian Manatee — same habitat, park, country, tags or family.

How to help

The west indian manatee is classified as vulnerable. Organizations such as UICN, WWF y Wildlife Conservation Society work specifically on its conservation and that of its habitat; looking into their programs is a good starting point if you want to get involved.

It's documented in 11 real protected areas — part of why protecting these places matters for its conservation.

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