The reproductive mode of orcas is viviparous. Although it lives in the ocean, it is actually a mammal, so it is viviparous. Usually killer whales live in groups, and there are more than one male and more than one female, that is, an adult male killer whale and several female killer whales form a breeding group. Breeding usually takes place in summer, and young killer whales are born in autumn. Females will mature sexually at the age of 6-10, while males will wait until about 10-13.

1. Breeding time: killer whales are distributed in many places. Because of different living environments, temperature and climate, the breeding time is different. For example, killer whales in the northwest Pacific usually mate from May to July every year, but in the northeast Pacific, their breeding time will be postponed to October to March of the following year.

2, more than one male: Killer whales are social animals. They form a reproductive group with only one male and an irregular number of females. Strong competitive killer whales can often occupy more females, and the number can even reach 30-40, while weak killer whales may only have 3-5 females.

3. Produce offspring: Killer whales can mate all year round. Usually, males and females give birth every 3-5 years. The pregnancy time is one year, and only one offspring is usually produced per offspring, but there are also twins. One year after birth, the baby killer whale will forage independently, and when the male matures, he will be driven out of the group by his father.