The South Georgia stock has been exploited until 1964, but now all stocks are protected.
Quotes supplied by ComStock, an Interactive Data company. Longevity is at least 20 years, but it could be over 23 years Hindell and Little, 1988. Southern Elephant Seal, Mirounga leonina, Linnaeus, 1758. Outside the breeding season they can travel north upto British Columbia. The population dynamics parameters differ slightly per stock. Northern Elephant Seal, Mirounga angustirostris, Gill 1866. The Northern elephant seal is protected in Mexico and the USA.
Conflicts between marine mammals and fisheries off the coast of California. Pups are born with black lanugo and become silvery after moult. Males can be as large as 450 cm and weigh 1,800-2,700 kg.
Numerical changes in the population of elephant seals Mirounga leonina L. For 1980 only 25 cases of entanglement were reported DeMaster et al, 1985. Most of the population estimates have been derived from pup counts. You can either turn on Java Script or click here to view quotes. Since then there has been an almost exponential increase, especially in the northern colonies. The seals are dark grey with a lighter ventral side. Female mortality rates are unknown, but certainly lower.
Females reach maturity at the age of 3-5 years and males at 9-10 years.