Humpback whale (Megaptera novaeangliae) diving sequence (a2) in the Pacific Ocean in Monterey Bay, California. The humpback whale is a baleen whale, feeding on krill and small fish. They travel up to 25,000 km (16,000 mi) each year, migrating from Mexico to the Californian coast around Monterey Bay – they can be seen here from mid-April until early December. Since near-extinction in the 1980s populations have recovered and there are now 14 populations of humpbacks around the world of around 80,000 in total. There are an estimated 800 humpbacks up in the ‘Humpback Whales off California’ population.