11) What type of animal is an orca?
12) How do orcas sleep?
13) What was the first orca to be successfully released back into the wild?
14) How often do female killer whales give birth?
15) What is the average life span of a killer whale?
16) What type of mammal is the most widely distributed in the world?
17) What is the conservation status of orcas?
18) Where was the albino orca spotted in 2010?
19) What is the primary way orcas communicate?
20) What type of predators are orcas?