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It is impossible for cetacean abundance estimates to be completely precise and IWC estimates are presented as a ‘best estimate’ figure, accompanied by a 95% Confidence Interval, showing a range of plausible values for the population's actual abundance.
Around 200 gray whales regularly feed off Sakhalin Island, Russia; although population numbers have slowly increased by 4% since the 1990s 68, 69, the low numbers of individual whales observed in 2022-2023 raise concern 70. Primary threats are entanglement and activities related to oil and gas.
Shown are estimates of global whale populations in pre-whaling periods versus the year 2001.
26 Οκτ 2023 · Currently, an estimated 15,000 are left in the world. About 2,000 blue whales swim near the Pacific coast, spanning from Alaskan to Central American waters. Their populations, however, are threatened by ship strikes. When blue whales come up for oxygen, they collide with massive watercraft carrying shipping containers.
Whales roam throughout all of the world's oceans, communicating with complex and mysterious sounds. Their sheer size amazes us: the blue whale can reach lengths of more than 100 feet and weigh up to 200 tons—as much as 33 elephants. Despite living in the water, whales breathe air.
28 Σεπ 2023 · Blue whales are the largest animals ever to live on our planet. They feed almost exclusively on krill, straining huge volumes of ocean water through their baleen plates (which hang from the roof of the mouth and work like a sieve). Some of the biggest individuals may eat up to 6 tons of krill a day.
Pacific Islands. National. Southeast. Whales are among the largest and oldest animals on Earth and belong to a group of marine mammals called cetaceans. Learn more about the whale species that NOAA Fisheries works to protect and conserve.
