nearly submerged hippotomus in blue water yawns wide open

africa african all amphibius animal aquatic area art big blue body botswana brown camera conservation danger dangerous drink evening eye facing fat fauna grass head herbivore hippo hippopotamus hippotomus huge its lake large male mammal massive mostly mouth muzzle national natural nature nearly ngorongoro open orange park pool portrait reserve river safari showing south submerged sun swim tanzania teeth water wet wide wild wilderness wildlife yawns young