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This photo is from Photo Gallery: Antarctica Warming
Leopard Seal
Photograph by Paul Nicklen
A leopard seal plunges through Antarctic waters. Swift and stealthy, adult leopard seals tend to be solitary creatures, hunting alone at the fringes of pack ice. Finding a mate can be challenging given their isolation, but seals attract one another by singing—females to announce their readiness to a mate, males to serenade potential mates.