These manatees breed throughout the year and gestate for approximately one year. Usually one young is born. An individual thought to be a newborn measured 739mm in length. The mothern and calf have a long-lasting bond. The mother may carry the young on her back or clasped to her side. The lifespan of this animal is unknown, but individuals have lived past twelve and a half years in captivity.
Average birth mass: 12500 g.
Average gestation period: 328 days.
Average number of offspring: 1.
Average age at sexual or reproductive maturity (male)
Sex: male: 1096 days.
Average age at sexual or reproductive maturity (female)
Sex: female: 1096 days.
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