Hippopotamus (Hippopotamus amphibius) yawning, Serengeti National Park, Tanzania, East Africa, Africa

africa animals color image copy space day east africa environment head and shoulders hippopotamus hippopotamus amphibius mouth open national park nature nobody one animal outdoors photography river serengeti serengeti national park swimming tanzania travel travel destinations vertical wildlife yawning african animal color colour daytime eastern africa negative space outside park sport swim tanzanian water white space yawn sirius collection