Sightings of whales are common off the coast of iSimangaliso.

The majority of sightings of whale in KwaZulu-Natal are South Hemisphere Humpback whales (Megaptera novaeangliae), which tend to be more spectacular and lively with their regular breaching than the Southern Right whales.

These whales pass along the KZN coast annually on a migration route between their summer polar feeding grounds in the Antarctic to the tropical and sub-tropical coastal waters of Northern Mozambique and Madagascar where they breed in the winter. The coastal waters off South America, Australia, New Zealand and the islands of the south-western Pacific Ocean are other breeding grounds for these marine mammals.