Tail sailing refers to the action of whales lifting their tails clear of the water for long periods of time. The process is rarely observed by humans, and the precise motivation for this phenomenon is unknown. It is thought that whales either undertake this activity to catch the wind and 'sail' through the water, or as a method to cool down. A third theory suggests that the whale is feeding close to the sea floor.
- "Sailing Tail". Whale Coast Route. Retrieved 2016-03-11.
- "Rare footage released of humpback whale hanging tail in air near Hawaii". Telegraph.co.uk. Retrieved 2016-03-11.
- Staff, AOL. "Humpback whale 'tail-sails' as she watches her calf off the Maui coast". AOL.com. Retrieved 2016-03-11.
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