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.
Marine mammals produce other sounds by slapping parts of their body against the surface of the water. Tail or fluke slapping is commonly done by cetaceans. Humpback whale tail slaps produce broadband (30-12,000 Hz) sounds. Bottlenose dolphin s also use their tails to produce sound.