I interviewed at Bi-Mart (Madras, OR) in September 2016. The interview lasted about 25 min and was extremely laid back. He spent more time talking about Bi-marts operations and friendly, for the employee, work place then anything else.
Confidence votes 13. Whales, like otters, porpoises, and all other swimming mammals, undulate their spines rhythmically, waving their tails and flipping the flukes at the end, propelling them forward.
A fish's tail fin moves fro â¦ m side to side because it moves its entire spine from side to side when swimming. A whale's tail fin moves up and down because the animal's spine is moving up and down. Whales and dolphins (called Cetaceans in scientific jargon) evolved from land-dwelling mammals.