Southern Right whales float at surface, annual migration and mating ritual

southern right whales float surface annual migration mating ritual aquatic mammal eubalaena australis right whale drone whale polygamous aquatic wildlife endangered species cetacea cape whale coast annual migration courtship mating aggregation walker bay compete hermanus south africa aerial polyandrous mating group whale watching ecotourism cetacean atlantic eubalaena endangered ocean marine life wildlife animal marine nature sea overstrand balaenidae aquatic coastal waters callosities