Interpretation Provides information to assist in interpretation of the test results. Creatine kinase MB (CKMB) levels can be detected within 3 to 8 hours of the onset of chest pain, peak within 12 to 24 hours, and usually return to baseline levels within 24 to 48 hours.
Elusive Whales Set New Record for Depth and Length of Dives Among Mammals. A new study of elusive Cuvier's beaked whales shows they can dive to nearly 10,000 feet (3,000 meters). View Images. A Cuvier's beaked whale swims just under the surface of the ocean near the GalÃ¡pagos Islands.
1 There are two suborders of whales to which all species of whales belong: toothed whales and baleen whales. 2  Toothed whales include sperm, killer, and beluga whales, and they prey on large fish in deep waters as their main source of food. Whales belong to the order cetacean, meaning they are mammals that are fully adapted to aquatic life. 2  Like dolphins and porpoises, whales are believed to have descended from land animals that returned to the water roughly 50 million years ago after living millions of years on land. 3  b.