Researchers believe this new estimate is now close to pre-whaling numbers. A population of humpback whales in the South Atlantic has rebounded from the brink of extinction.. Within a single whale population, groups are further broken down into 'stocks.' “So we are talking about numbers that could represent 10% of the total population. According to a new study, published October 16, 2019 in … As of October 2020, the SRKW population totals 74 whales: J Pod=24, K Pod=17, L Pod=33. The size of all three Southern Resident pods was reduced in number from 1965-75 as a result of whale captures for marine park exhibition. Gray whales undertake one of the world's longest migrations, making a yearly round trip of 15,000-20,000 km. Eastern Pacific Gray Whale: The Recovery Success Story • The E Pacific Gray Whale population was greatly reduced by whaling (~15,500 whales were killed between 1846 and 1900) from a pre-exploitation size estimated to be between 15,000 and 24,000 animals. In 1851, hydrographer Matthew Fontaine Maury published a chart of whale population derived from voyage logbooks. Census Project Director/Coordinator: Alisa Schulman-Janiger Email: [email protected] For daily sighting details, please visit: www.acs-la.org More humpback and blue whale sightings highlighted our 2018/2019 ACS/LA Gray Whale Census and Behavior Project, but many skinny grays and low calf counts were very concerning. The eastern North Pacific gray whale (also known as the California Gray Whale) population has been hunted extensively by both commercial and aboriginal whalers, with intense commercial takes in the late 19th and early 20th centuries greatly reducing the population from an estimated pre-exploitation size of between 15,000 and 24,000 animals. Their reappearance off of Africa may be due to global warming. Even within a single population some stocks may be healthy whilst others are not. Status of Marine Mammal Species and Populations. By that time, the North Atlantic Ocean was already stripped of sperm and right whales. A good example of this is the North Pacific gray whale, considered healthy in the western North Pacific, but critically endangered in the east. The last estimate of the entire gray whale population was 27,000 individuals, Calambokidis said. The table below provides a list of marine mammal species and populations listed as endangered or threatened under the Endangered Species Act (ESA), or designated as depleted under the Marine Mammal Protection Act (MMPA).The MMPA gives special attention to depleted marine mammal species and populations. Although the remaining populations of gray whale were thought to be relatively isolated from each other, recent data shows that at least some of the whales in the western population actually migrate all the way round the rim of the Pacific and down to Mexico. The long distance travellers. 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