Sei Whales are protected under the Marine Mammal Protection Act of 1972 and the Endangered Species Act of 1973. Mating takes place during the winter. Mothers nurse their calves and look after them until they are weaned at the age of 6 - 9 months. By Staff Writer Last Updated Apr 16, 2020 12:35:38 PM ET. However, it is impossible to count the number of whales or any other ocean-dwelling creature accurately, and thus, the real number of whales …

While the sei whale has been hunted by humans since the 1860s, it wasn't until the 1950s and 1960s and the declining availability of blue and fin whales that the killings seriously expanded. While we see Bryde’s whales year-round in the Hauraki Gulf, sei whales are only occasional visitors. Sei whales are largely solitary animals although they may be seen swimming in small pods of up to 6 at times and on rare occasions may increase to around 50 or more during certain feeding periods.

Since 1986, the International Whaling Commission (IWC) has officially halted all commercial whaling. Currently, there is lack of sufficient data with regards to the number of blue whales off the eastern North Atlantic. According to Greenpeace.org, the West Pacific grey whale population is the most endangered in the world. These whales are known for creating very loud low-pitched sounds. Females typically give birth to one calf. As of current not much is known about why these sounds are created. Sei whales are sexually mature when they are about 10 years old. How Many Whales Are Left in the World?

Females mate every 2-3 years and gestation lasts 11-13 months. The answer depends on the breed you are talking about.

Robbie Shade/CC-BY 2.0. Sei whales are polygynous, one male having exclusive mating rights with many females.

Keen to learn more about the whale species we find in the Hauraki Gulf? However, according to some data, the blue whales off Iceland are believed to be just 1,000 or even more. No one thing is too small. How many southern right whales are left blue whale world s largest animal blue whale photos 11 Facts About Blue Whales The Largest Animals Ever On EarthThe Record Setting Anatomy Of Blue Whale A Look Inside11 Facts About Blue Whales The Largest Animals Ever On EarthBlue Whale National Geographic11 Facts About Blue Whales The Largest … How You Can Help: NOAA: Learn more about the Sei Whale's habitat, threats, and efforts being made for conservation. During the 20th century, a total of 360,000 blue whales were killed in the Antarctic. World Wildlife Fund: Learn more about the Sei Whale, conservation efforts, and what you can do to help ensure the species' survival. Sei whales are one of the fastest species of baleen whale and can swim at speeds of up to 30 knots (55km/hr). The best estimates from the International Whaling Commission indicate that there are roughly 1.7 million whales in the world.