https://wonderclub.com/.../mammals/california_sea_lion.html Sea Lion Info. At birth pups are coloured silvery/fawn and as they mature females retain this colouration, whereas males turn darker brown and … California sea lions are known for their intelligence, playfulness and noisy barking. Their numbers are abundant (188,000 U.S. stock 1995 est. Sea lions basking near Pier 39, San Francisco, CA. Female California sea lions reach about 1.5 to 2 m (5–6.5 ft.) and 50 to 110 kg (110–240 lbs.). Appearance: California sea lions exhibit sexual dimorphism, where there are clear visual differences between adult male and females. They eat a variety of prey—such as squid, anchovies, mackerel, rockfish, and sardines—found in upwelling areas. The California sea lion (Zalophus californianus) population in the United States has increased steadily since the early 1970s.The Marine Mammal Protection Act of 1972 (MMPA) established criteria for management of marine mammals based on the concept of managing populations within the optimal sustainable population (OSP), defined as a range of abundance from the maximum net … Name: California Sea Lion Location: Western North America Status: California sea lions are classed as least concern on the IUCN Red List of endangered species. The California Sea Lion (Zalophus californianus) is a coastal sea lion of western North America. ), and the population continues to expand at a rate of approximately 5.0% annually. Galapagos sea lions are generally smaller in size than California sea lions. The capability of a blindfolded California sea lion (Zalophus californianus) to discriminate diameter differences of circular discs by means of active touch with its mystacial vibrissae was studied.Using a forced choice paradigm the sea lion was required to choose the larger of two simultaneously presented perspex discs. Market hunting, bounties, pollutants such as DDT and other forces depressed sea lion … In my comments on the site you'll see that I think that this sea lion has fishing line around its neck. Just wanted to let you know I have this image in my California sea lion image gallery with a link back to you. They are IUCN listed as Least Concern. The Gulf of California harbors about 15% of the total California sea lion (Zalophus californianus californianus) population.We studied pup morphometrics from eight Gulf of California rookeries during the 1996 and 1997 reproductive seasons to describe sex differences in body size and body condition indices. With a population of 238,000, there are enough California sea lions to populate a slippery city the size of Scottsdale, Arizona. The pesticide DDT, still in targeted use to prevent malaria in tropical countries, accumulates through the food chain and is found at near-toxic concentrations in Although genetically isolated and non-migratory, the declining Gulf of California population is still counted as part of the total population. 7 September 2013: This may sound familiar, as California sea lions are the most commonly kept pinnipeds in aquaria and marine theme parks. Females won’t reach anywhere close to this size. California sea lions belong to the family Otariidae which means "little ears.” Female California sea lions reach about 1.5 to 2 m (5–6.5 ft.) and 50 to 110 kg (110–240 lbs.). Male sea lions grow much larger than females. Additionally, the pressures from the fish industries also bring them into conflict with humans. California Sea Lions are common and, under protection of the Marine Mammals Act, the main population (along western Baja and the California coast) is at carrying capacity. California sea lions at the Central Park Zoo (Courtesy of Eva Sawyer) In addition, the researchers identified the brain areas devoted to processing touch sensations from the sea lion… Body Shape Size. California sea lions feed mainly offshore in coastal areas. They are quite intelligent, can adapt to man-made environments, and even adult males can be easily trained. Their fur color ranges from chocolate brown seen in males to a lighter, golden brown seen in females. Both males and females of the species reach sexual maturity at about 4-5 years of age, but males may not achieve territorial status until approximately 8-9 years of age. Steller Sea Lion Eumetopias … Male California sea lions reach about 2 to 2.5 m (6.5–8 ft.) and 200 to 400 kg (440–880 lbs.). South American sea lion males, like the boys at Coral World, will average somewhere between 500-600 pounds when they are fully grown. Scientific Name: Phocidae spp (seals), and Otariidae spp (fur seals and At maturity male California sea lions are much larger than females. Groups of sea lions often rest on the water "rafting", with their flippers extended above the surface. Threats: There are natural problems such as El Ni ñ o, that have an effect on food availability. California sea lion breeding group at San Miguel Island, California. California Sea Lion (Zalophus californianus) Size: The male California sea lion can grow to over 7 feet in length and weigh over 900 pounds, while females can reach over 6 feet in length and weigh up to 250 pounds. Pups of the species measure about 70-80cm and weigh 6-9kg at birth, male pups being born heavier than female pups. Australian Sea Lions have a body length between 1.3 and 2.5 m (4.25 - 8.2 ft) and they weigh between 60 and 300 kgs (130 - 660 lbs). They also may take fish from commercial fishing gear, sport fishing lines, and fish passage facilities at dams and rivers. California's beaches and islands are also home to Pacific harbor seals, elephant seals, and rarer fur seals. Sea lion Size Male California sea lions reach about 2 to 2.5 m (6.5–8 ft.) and 200 to 400 kg (440–880 lbs.). Adult males are defending territory, females are tending to their pups, and pups are playing amongst themselves. A female South American sea lion will average between 150-300 pounds. There are 33 species of pinnipeds (meaning "wing-" or "fin-footed") which include 18 true seals, 14 eared seals (sea lions and fur seals), and 1 walrus. Body Shape A California sea lion has a fusiform body shape that is sleek and streamlined. Abstract. 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