observed in certain months (September, October, February, and December). The Ross seal is a solitary species, therefore they do not gather in large breeding season. Additionally, during the breeding season, female seals entering the pack ice engage in continuous haul-outs lasting 5 to 7 days. These periods are occasionally interrupted by brief water entries lasting 1 to 3 hours, indicating a potential alternation between capital and facultative income breeding strategies.

Females give birth to their young on the ice in November. Ross