Your running pace is usually measured by your average mile time, or at least, by what I understand. I'm a competitive distance runner, so I'm also familiar with the term Race Pace - which is the pace you run at during a race. These are different.
Young hippos can only stay under water for about half a minute, but adults can stay submerged up to six minutes. Source(s): http://www.awf.org/wildlives/140 johnslat Â· 1 decade ago
Fortunately, hippos can nurse from their mothers either on land or underwater. They do this underwater by closing their valve-like ears and nostrils. Despite their size, hippos are actually quite efficient underwater. They can hold their breath below the surface for up to five minutes. When hippos are exposed to the sun, their skin actually produces an oily red substance, serving as moisturizer and sun repellant for their skin.