Humpback whales (Megapetra Novaegliae) can be seen in the
Galapagos marine reserve between July and September, prodominantly
near the islands of Espanola, Sante Fe, Santa Cruz and the north
western part of San Cristobal. By October they migrate to colder
waters. The majority of the whales that can be seen in the
Galapagos are female, and it is thought that the aquatic
environment of the Galapagos acts as a nursery for new born calves
and also a great source for nutrients during the 12 month gestation
period. Breeding happens near the continent coastal waters,
but because males can get little aggressive, females separate and
swim to the Galapagos waters to feed and protect their young ones.
This could be one reason why the Galapagos Archipelago is
considered a whale sanctuary, and a place you can find other
mammals including sperm whales, orcas and dolphins.