Choose the best answer to complete the passage.

Whales live in the (1) ______. They can stay underwater for 30 to 90 minutes at a time. Whales cannot breathe under water. They have a blowhole in the top of their (2) ______to breathe through when they come to the surface of the water. Whales are the (3) ______animals in the ocean. They can be over 100 feet long and weigh over 150 tons. Whales eat krill, which is like shrimp, as well as fish, and plants. They are good (4) _____and move their tails up and down and use their flippers to turn. They (5) ________together in groups called “pods.”