How many baby Blue whales are in a litter?
A Blue whale (Balaenoptera musculus) usually gives birth to around 1 babies.
Each of those little ones spend around 326 days as a fetus before they are released into the wild. Upon birth, they weight 2739.31 kg (6039.13 lbs) and measure 7.24 meter (23′ 9″). They are a member of the Balaenopteridae family (genus: Balaenoptera). An adult Blue whale grows up to a size of 30.48 meter (100′ 0″).
To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.
The blue whale (Balaenoptera musculus) is a marine mammal belonging to the baleen whale suborder Mysticeti. Reaching a maximum confirmed length of 29.9 meters (98 feet) and weight of 173 tonnes (190 tons), it is the largest animal known to have ever existed. The blue whale’s long and slender body can be various shades of grayish-blue dorsally and somewhat lighter underneath.There are currently five subspecies of blue whale, recognized by the Society for Marine Mammalogy’s Committee on Taxonomy: B. m. musculus in the North Atlantic and North Pacific, B. m. intermedia in the Southern Ocean, B. m. brevicauda (the pygmy blue whale) in the Indian Ocean and South Pacific Ocean, B. m. indica in the Northern Indian Ocean, and B. m. unnamed subsp. in the waters off Chile. The blue whale diet consists almost exclusively of euphausiids (krill).Blue whales were abundant in nearly all the oceans on Earth until the end of the 19th century. They were hunted almost to extinction by whaling until the International Whaling Commission banned all hunting of blue whales in 1967. The International Whaling Commission catch database estimates that 382,595 blue whales were caught between 1868 and 1978. The global blue whale population abundance is estimated to be 10,000-25,000 blue whales, roughly 3-11% of the population size estimated in 1911. There remain only much smaller concentrations in the Eastern North Pacific (1,647), Central North Pacific (63-133), North Atlantic (1000-2,000), Antarctic (2,280), New Zealand (718), Northern Indian Ocean (270), and Chile (570-760).
Other animals of the family Balaenopteridae
Blue whale is a member of the Balaenopteridae, as are these animals:
- Sei whale with 1 babies per pregnancy
- Fin whale with 1 babies per pregnancy
- Bryde’s whale becoming 72 years old
- Humpback whale with 1 babies per pregnancy
- Common minke whale with 1 babies per pregnancy
Animals that share a litter size with Blue whale
Those animals also give birth to 1 babies at once:
- Feather-tailed possum
- Nancy Ma’s night monkey
- Defua rat
- Gelada
- Painted bat
- Western broad-nosed bat
- Ribbon seal
- African brush-tailed porcupine
- Grey seal
- Insular flying fox
Animals that get as old as a Blue whale
Other animals that usually reach the age of 110 years:
- Humpback whale with 95 years
- Killer whale with 100 years
- Homo sapiens with 122.5 years
- Fin whale with 116 years