Two hippos play-fighting in the Khwai River while another looks on behind, Khwai Botswana

hippopotamus amphibius okavango delta moremi game reserve hippopotamus hippo botswana wildlife conservation africa tussle biting bite safari grazer tourism mammal herbivore playing tusk battle territory strength attack ripples vulnerable water dangerous khwai splash pod 60fps fighting 4k mouth close river shallow depth of field young flowing big scenery gums teeth huge grass bank green pink