BUSINESS >Turkeyâs Top 500 companies announced. Turkish oil refiner TÃ¼praÅ, which posted over 40 billion liras in sales. Turkish oil refiner TÃ¼praÅ, the majority stake in which is owned by Turkish conglomerate KoÃ§ Holding, has again topped the list of the Top 500 Turkish companies for 2012, the Istanbul Chamber of Industry (Ä°SO) announced today.
When submerged underwater, hippos can hold their breath for 5 minutes or even longer if needed. Hippos have nostrils located on the top of their heads, which allows them to breathe even if the rest of their body is under water.
Usually these creatures are able to hold their breath anywhere from 4 to 15 minutes; however they have been known to remain underwater for longer periods of time if necessary. The longest time an alligator has been known to hold its breath varies from 30 minutes to 2 hours.