Reproductive Information Reproductive Information A sea otter can reproduce, and pups can be born any time of the year. Most are born from January through March, and from August to October. Males are sexually mature at five years, however they may not hold a territory until they are eight to ten years of age.
Females are sexually mature at three to five years of age.
A male and a receptive female may form a pair-bond one to ten days during which they remain close together. The gestation period for the female is about eight months. When born, pups weigh three to five lb. The pups usually stay with their mother for the next six months.