Send a friend a virtual greeting featuring some of the most compelling images from National Geographic magazine.
Nap TimePhotograph by Tim LamanFrom "California's Wilderness," National Geographic, February 2006California sea lions doze on Goldfish Point in La Jolla. Protected since 1972, the marine mammals number over 200,000, with the population growing about 6 percent a year. Preying on fish, the sea lions stress the ecosystem and compete with local fisheries, raising questions about their optimal numbers.