turbulent ocean water with seals sitting on a rock : (pix sanjiv shukla)

pinnipeds seal carnivorous finfooted semiaquatic marine mammal streamlined body limbs flippers air water whiskers vibrissae fat blubber fur ocean sea salt earth large deep shallow sky blue waves surf white temperature tropics current salinity turbulence turbulent tide wind pacific atlantic indian arctic antarctic southern seawater hydrosphere life heat reservoir climate weather carbon cycle biodiverse microscopic algae phytoplankton organic matter plant gases dioxide nutrients oxygen atmosphere food supply ecosystem cold dark depth continent continental shelf