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.
Humpback whales may also make stand-alone sounds that do not form part of a song, particularly during courtship rituals. Finally, humpbacks make a third class of sound called the feeding call. This is a long sound (5 to 10 s duration) of near constant frequency.