Reference Terms
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Sea Lion
A sea lion is any of several marine mammals of the family Otariidae. Sea lions are characterized by the presence of external ear pinnae or flaps, long front flippers, and the ability to walk on four flippers on land. Sea lions are generally found in coastal waters of the temperate to subpolar regions of both northern and southern hemispheres.
Sea lions are often a popular attraction at zoos and aquariums, performing tricks such as throwing and catching balls on their noses and clapping.
Sea lions of many species have seen a severe and rapid decrease in numbers in recent years. Many factors including overfishing of other species and pollution have probably contributed to the decline. The population of Steller's sea lions in Alaska has declined as much as 80% since the 1970s.
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Plants & Animals News
October 26, 2025
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Oct. 19, 2025 — Researchers have developed a light-emitting sugar probe that exposes how marine microbes break down complex carbohydrates. The innovative fluorescent tool allows scientists to visualize when and where sugars are degraded in the ocean. This ...
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Oct. 11, 2025 — Researchers have unearthed South America’s first amber deposits containing ancient insects in an Ecuadorian quarry, offering a rare 112-million-year-old glimpse into life on the supercontinent ...
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Latest Headlines
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Oct. 26, 2025 — Life’s origin story just became even more mysterious. Using mathematics and information theory, Robert G. Endres of Imperial College London found that the spontaneous emergence of life from ...
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Oct. 24, 2025 — Scientists have unveiled Khankhuuluu, a new Mongolian dinosaur species that predates and closely resembles early Tyrannosaurs. With its long snout, small horns, and lean build, it represents a ...
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