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
Hippos are specially built for life in the water. Their eyes, ears, and nostrils are on the tops of their heads. That lets them get almost all the way under the water for maximum cooling, while still being able to see, hear, and breathe. When they want to, though, hippos can go completely underwater.