Fin Whale - NOAA Fisheries
2023年10月30日 · The fin whale is the second-largest whale species on earth, second only to the blue whale. It is found throughout the world’s oceans. It gets its name from an easy-to-spot fin on its back, near its tail.
Killer Whale - NOAA Fisheries
2024年10月22日 · The birth rate for killer whales is not well understood. In some populations, birth rate is estimated at every 5 years for an average period of 25 years. Killer whales, beluga whales, narwhals, short-finned pilot whales, and humans are the only known species that go through menopause.
Gray Whale - NOAA Fisheries
2023年4月13日 · Lifespan & Reproduction. Gray whales become sexually mature between 6 and 12 years, with the average of maturity being about 8 to 9 years old. After 12 to 13 months of gestation, females give birth to a single calf. Newborn calves are approximately 14 to 16 feet long and weigh about 2,000 pounds.
Whales and Climate Change: Big Risks to the Ocean's Biggest …
There are only 73 Southern Resident killer whales remaining. This is due to several factors including limited access to their preferred prey, Chinook salmon, and high levels of contaminants from environmental pollution. Climate change has the potential to increase these two threats.
Beluga Whale - NOAA Fisheries
2024年1月17日 · Beluga whales are known for their white color and range of vocal sounds, earning them the title of "canary of the sea." They are very social animals, forming groups to hunt, migrate, and interact with each other. Learn more about beluga whales.
Humpback Whale - NOAA Fisheries
Humpback whales are a favorite of whale-watchers, as they can be found close to shore and often display activities near the surface, such as breaching (jumping out of the water) or slapping the surface with their pectoral fins and tails.
Minke Whale - NOAA Fisheries
2024年8月20日 · Minke whales have a fairly tall, sickle-shaped dorsal fin located about two-thirds down their back. Their body is black to dark grayish/brownish, with a pale chevron on the back behind the head and above the flippers, as well as a white underside.
Blue Whale - NOAA Fisheries
2023年9月28日 · 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.
Genetics Reveal Pacific Subspecies of Fin Whale
New genetic research has identified fin whales in the northern Pacific Ocean as a separate subspecies, reflecting a revolution in marine mammal taxonomy as scientists unravel the genetics of enormous animals otherwise too large to fit into laboratories.
Sperm Whale - NOAA Fisheries
2023年1月30日 · Sperm whales. Credit: NOAA Northeast Fisheries Science Center. Sperm whales are the largest of the toothed whales and have one of the widest global distributions of any marine mammal species. They are found in all deep oceans, from the equator to the edge of the pack ice in the Arctic and Antarctic.