West Indian Manatee

West Indian Manatee

Trichechus manatus

Community Challenges

Breed silver or better aquarium animals

Overview

The West Indian manatee (or Trichechus manatus) is a large marine mammal found in shallow coastal waters, rivers, and estuaries throughout the southeastern United States, the Caribbean, and parts of Central and South America. It prefers warm, calm environments with abundant aquatic vegetation.

West Indian manatees have a rounded, seal-like body covered in tough, grey-brown skin, with small eyes, a broad, paddle-shaped tail, and flipper-like forelimbs.

Adult West Indian manatees typically measure between 2.7m to 4m in length and weigh 350kg to 600kg. Females are larger than males.

Statistics

Conservation Status
Vulnerable
Class
Mammalia
Order
Sirenia
Family
Trichechidae
Genus
Trichechus
Native Range
Atlantic Ocean coasts of North, Central and South America
Periodic Food Expenses
$539.00
Population Range
1-8
Temperament
Confident

Habitat

Planned population

Adult

Preferred group ranges

  • mixed
    Mixed
    1 - 8
  • male
    Male
    1 - 8
  • female
    Female
    1 - 8
Max per sex
Max per sex
77

Minimum habitat requirements

space

Space

  • Deep water area
    Deep water area
    20m²
  • Aquatic area
    Aquatic area
    150m²
barrier

Barrier

  • strength
    Strength
    Grade 2
  • height
    Height
    1m
terrain

Terrain

  • Sand
    Sand

    30% to 100%

  • Soil
    Soil

    0% to 50%

  • Rock
    Rock

    0% to 30%

environment

Environment

  • Habitat temperature
    Habitat temperature
    23°C to 30°C
  • salinity
    Salinity
    Any Salinity

Thriving relationships

No compatible species

Neutral relationships

No compatible species

Statistics

Offspring Dispersal
None
Mating System
Promiscuous
Temperament
Confident
Dominance
Older males are dominant in mating herds
Guests Can Walk Through
true

Manatees are semi-social. They are likely to gather in groups for feeding and mating, and will interact with others when they meet them, but generally males are solitary and females live alongside their most recent single calf.

Enrichments

Food-Based Enrichments

  • Veggie Bundle Veggie Bundle

Habitat Enrichments

  • Rubber Duck Rubber Duck
  • Submarine Buoy Submarine Buoy
  • Water Hoop Water Hoop
  • Bubble Blower - Airstone Bubble Blower - Airstone
  • Lattice Ball Lattice Ball
  • Square Float Square Float

Conservation Topics

  • Ocean Ecosystem Ambience
  • Cathemeral Behaviour
  • Climate Change
  • Bycatch
  • Pollution
  • Herbivore Diet
  • Mammal Evolution
  • West Indian Manatee Fact Sheet
  • Swimming Animals
  • The Animal Kingdom Talk
  • Ecological Restoration
  • West Indian Manatee Name Plate

Lifecycle

Manatees are semi-social. They are likely to gather in groups for feeding and mating, and will interact with others when they meet them, but generally males are solitary and females live alongside their most recent single calf.

West Indian manatees mate year-round, with peaks in the summer. A fertile female manatee will attract males, and groups of up to 12 males may form around one female, following her consistently while she is fertile. These males will compete over mating rights, with larger and older males more likely to succeed.

After mating, the female is pregnant for 12 to 14 months, giving birth to a single calf underwater. Twins are very rare, but possible. On average, newborn manatees measure 1.1m and weigh 32kg. Calves remain with their mothers for a long time and bond closely. They nurse for up to two years, although the young may start nibbling on plants within a few weeks. While with their mothers, the calves learn how to forage for food and avoid threats.

At 2 years old, manatees leave their mothers to become independent. The mothers are then ready to mate again, while the calves will not reach sexual maturity until 3 to 5 years old. Males may only successfully mate at 5 to 7 years old, when they become strong enough to compete for mating rights.

Statistics

Litter Size
1-1
Gestation / Incubation Period
13 months
Interbirth Period
23 months
Reproduction Difficulty
Easy
Age Of Sexual Sterility
40 years
Age Of Sexual Maturity
7 years
  • Juvenile7 years
  • Adult33 years
  • Elderly10 years

Animal Facts

  1. West Indian manatees are colloquially called ‘sea cows’ in some languages because of their slow movements and plant-based diet.
  2. The teeth of the West Indian manatee never stop growing and are replaced from the back as they are ground down from grazing at the front of the mouth.
  3. The closest living relative of manatees are elephants.
  4. Manatees communicate with trills and chirps, especially mothers and their calves.
  5. Manatees were mistaken for mermaids by early sailors. Christopher Columbus wrote that the manatees, or ‘mermaids’, he saw were ‘not half as beautiful as they are painted’.

Conservation

West Indian manatees are considered Vulnerable, the subspecies are Endangered. One of the most significant threats is boat collision, as they often swim near the surface in areas with heavy boat traffic. Habitat loss, especially the destruction of warm-water refuges like natural springs that manatees rely on in colder months, is another issue. Pollution and entanglement in fishing gear may kill manatees via impaction or drowning. Historically, manatees were also hunted for their meat and hide. Their slow reproductive rate makes recovery from decline difficult.

Manatees are protected under laws such as the U.S. Marine Mammal Protection Act and the Endangered Species Act, which prohibit harassment, hunting, or harm to the animals. In key manatee habitats, boat speed limits have been established, with further awareness campaigns targeted at boaters and the public. Rescue and rehabilitation programmes have successfully treated and released injured manatees. Additionally, efforts to preserve and restore aquatic vegetation and protect warm-water habitats are helping to support manatee survival.

Map location
Native Range
Atlantic Ocean coasts of North, Central and South America

Statistics

Wild Population
8,197 - 11,328 (estimated)
Conservation Status
Vulnerable

Valid Release Group Types

  • Female Bachelor Herd
  • Solitary Male
  • Breeding Partners

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Planet Zoo 2 is in active development and the Zoopedia reflects this work in progress. Text, images, stats etc. are not necessarily final and may change or be expanded upon.