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.
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.