REPRODUCTION

Calves are usually born in the autumn although there is such flexibility that some authorities
doubt that a special breeding season exists.
It is reported that in New Zeeland females and newborn calves swim along the coast of the
North Island in october and november.
The female produces her offspring after a gestation period of 16 months. There appears to
be a strong responsibility towards members of the group, mothers naturally being protective
of their young. In addition, members of the group seem to protect and assist injured
colleagues.