J for Jasconius. It is said to appear like an island. In the middle high german version of the Navigatio sancti brendani abbatis (Von sente Brendan) transcribed by Dr. Thomas and F. Shannon it is said to have a small forest, a beach and even a small river on its back. It lures sailors by its appearence onto its back and as soon as they ignite a fire, it dives into the sea and kills the sailors. Some believe Jasconius is the whale that swallowed Jonah, from the Bible story.
The Bag Lady 
fascinating!
I enjoyed reading about this!
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