For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
The Bottlenose whales and Sperm whales can stay underwater for almost 2 hours on long dives. Most of the large whales, like the Blue whale and the Fin whales, rarely stay down longer than 40 minutes while large dolphins such as the Bottlenose dolphin usually stay down for less than 15 minutes.