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Easton's Bible Dictionary
The whale tribe are included under the general Hebrew name Tannin ( Genesis 1:21; Lamentations 4:3 ). "Even the sea-monsters [tanninim] draw out the breast." The whale brings forth its young alive, and suckles them.
It is to be noticed of the story of Jonah's being "three days and three nights in the whale's belly," as recorded in Matthew 12:40 , that here the Gr. ketos means properly any kind of sea-monster of the shark or the whale tribe, and that in the book of (Jonah 1:17 ) it is only said that "a great fish" was prepared to swallow Jonah. This fish may have been, therefore, some great shark. The white shark is known to frequent the Mediterranean Sea, and is sometimes found 30 feet in length.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain.
Easton, Matthew George. Entry for 'Whale'. Easton's Bible Dictionary. https://www.studylight.org/dictionaries/eng/ebd/w/whale.html. 1897.