why are sei whales endangered
The sei whale became a major target for commercial whaling after the preferred stocks of blue and fin whales had been depleted. NOAA Fisheries and our partners are dedicated to conserving and rebuilding the sei whale population. Photo: NOAA Northeast Fisheries Science Center/Allison Henry. According to the U.S. National Marine Fisheries Service, the total size of the Sei whale population is around 80,000 individuals. Sei whales have a tall, hooked dorsal fin located about two-thirds down their back. No one knows where sei whales breed. Sei Whale ! The most recent population assessments can be found on the sei whale stock assessment reports. WWF works to make the IWC more effective in reducing threats to whales. Whales are threatened by climate change and can also be harmed by pollution, shipping strikes and entanglement in fishing gear. At the water's surface, sei whales can be sighted by a columnar or bushy blow that is about 10 to 13 feet in height. Fish & Wildlife Service. This hotline is available 24 hours a day, 7 days a week for anyone in the United States. The sei whale is listed as endangered under the Endangered Species Act and depleted under the Marine Mammal Protection Act. Calves are about 15 feet long and weigh about 1,500 pounds at birth. Sei whales become sexually mature at 6 to 12 years of age when they reach about 45 feet in length. Decreasing Whale Population. I have just recently made a gif about sei whales being endangered and I decided to post it on my blog for you guys to see. You may also contact your closest NOAA Office of Law Enforcement field office during regular business hours. We work with volunteer networks in all coastal states to respond to marine mammal strandings. The total gestation period can last up to the 12 months, with the female giving birth to one calf every other year. Call the NOAA Fisheries Enforcement Hotline at (800) 853-1964 to report a federal marine resource violation. Sei Whales are also impacted by human sources of pollution that end up in the ocean, such as plastics and contaminated run-off. IUCN conservation status: Endangered. When the ESA was passed in 1973, the sei whale was listed as endangered throughout its range. A feeding sei whale. Vessel strikes and entanglement pose the biggest threat to sei whales today. There was a pronounced increase in the killing of sei whales during the 1950s and '60s because of the decline of blue and fin whales. Fin Whale. Sei whales inhabit all oceans and adjoining seas except in tropical and polar regions. Like other large whales, fin whales are threatened by environmental change including habitat loss, toxics and climate change. Sei Whale spotted off the coast of Dana Point California. As of current not much is known about why these sounds are created. Observe all large whales from a safe distance of at least 100 yards and limit your time spent observing to 30 minutes or less. The blue whale is not only one of the most well-known species of whale, it’s also the largest known whale in existence growing to lengths of over 100 ft and weighing more than 150 tons; although 60 – 80 ft. is more common.. Find this out and see what you know about why the blue whale is endangered by using the quiz and worksheet. NOAA conducts research on the acoustic environment of cetaceans, including sei whales. Fin whales are rorquals, members of the family Balaenopteridae, which also includes the humpback whale, the blue whale, Bryde's whale, the sei whale, and the minke whales. Learn more about the Marine Mammal Health and Stranding Response Program. No reasonable doubt that the last individual has died, Known only to survive in cultivation, in captivity or as a naturalised population, Facing an extremely high risk of extinction in the Wild, Facing a high risk of extinction in the Wild, Likely to qualify for a threatened category in the near future, Does not qualify for Critically Endangered, Endangered, Vulnerable, or Near Threatened. Today, although commercial whaling has been officially halted, the species is subject to "scientific whaling" by Japan—that is, killing whales for scientific research. View our inclusive approach to conservation. Acoustics are used to monitor hearing levels and feeding behavior in sei whales. Pollution: As of now, pollution is the biggest threat to the existence of whales. Currently, Minke and Bryde Whales are not on the list of endangered species. The bodies of sei whales range in colouring from murky blues to steely greys to deep browns. 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