Info: Humpback Whales are part of the baleen whale family. Known scientifically as Megaptera novaeangliae, humpback whales can weigh up to 80,000 lbs. and can reach lengths ranging from 40 to 50 feet. Humpback whales have a very distinctive look with their bumpy head and very long dorsal fins. Humpback whales are very athletic. It is not uncommon to see a humpback whale breach the surface of the ocean. Male humpbacks are noted for their singing. they will oftentimes sing upwards to 10 to 20 minutes and repeat the song for hours. There is no explanation for the singing, however it is believed to be part of the mating ritual. Southern California Humpback Whale Population Humpback whale populations, as with other whales, have been depleted over the years due to whale hunting. At one point, the population fell approximately 90 percent before the 1966 whaling moratorium. While humpback whale populations have increased to about 80,000, they still remain vulnerable to collisions with ships, getting tangled in fishing equipment and noise pollution.