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Photo by @BrianSkerry A Great White Shark swims through a school of jacks in the waters off South Australia. New research is revealing fascinating and complex lives of this dominant apex predator species of shark. One study reveals that white sharks live well into their 70s which is longer than previously believed. What wisdom might a long lived animal that travels thousands of miles each year possess? And as with all predators their value is substantial for the health of the worlds oceans…

Photo by @stephenwilkes: I'm headed out fishing this Saturday morning--enjoying every last drop of the final weeks of summer. #iphoneonly #fishing #sailboat #waves #ocean #BlockIsland #RI #beautifulday by natgeo

Photograph by @thomaspeschak A blue whale surfaces close to a traditional Sri Lankan vessel. The worlds largest whale migrates past Sri Lanka's south and east coast every year. #srilanka #bluewhale @thephotosociety @natgeocreative by natgeo

Photo by @BrianSkerry A pod of Narwhals rest on the surface in the waters of the high arctic off Canadas Navy Board Inlet. Narwhals are called the unicorn whale due to their tusk which is actually a canine tooth that protrudes from the animals lip. Male narwhal tusks can grow to lengths of nearly nine feet. Coverage from an upcoming story in @natgeo about climate change in the arctic and the effect on wildlife and culture. For more ocean animal pics follow @BrianSkerry @thephotosociety…

@natgeo @stevewinterphoto Almost home from 3 months on the road - here is an #iPhone photo from the Hong Kong airport on my way to the gate! Just finished a very exciting and rewarding tour of Australia New Zealand and Singapore for NG LIVE - Where I spoke of my life as a @natgeo photographer and my life working with and trying to help conserve big cats and the lands in which they live. Fantastic and receptive crowds at every venue - it was such and honor to take the stage for @nglive at…

Photo by @BrianSkerry A young harbor seal peeks out from behind surf grass in a kelp forest on Cortes Banks a undersea mountain range located 100-miles off the coast of San Diego CA. Photographed #onassignment for @natgeo. @BrianSkerry will be presenting a special lecture of his work entitled Ocean Soul at the @Annenbergspace in Los Angeles on December 3rd! #seals #seadog #seamounts #nature #love #picoftheday #dreams #love @thephotosociety @natgeocreative by natgeo

@stevewinterphoto @natgeo Please Read the new @natgeo The Climate Issue! Climate Change is here. Together we can cool the planet. We ALL can each make a real difference and play a part in reducing CO2 and moving our homes communities country and world towards conservation and using renewable energy. Check out the Climate Issue @ http://ift.tt/GLoR2F and find out how. The Climate Issue gives you the info about what we can do each ONE of us to make a difference in the future of our planet…

What Caused 'The Great Dying' --"70 percent of Earth's Land Species Disappeared in a Geological Instant" (MIT)

iPhone photo by David Guttenfelder @dguttenfelder. Lovely light on the field and fence row near Bear Creek Montana. On assignment for @natgeo in the GYE. by natgeo

Red Sludge From Brazilian Dam Collapse Reaches the Atlantic (21 photos)