by jimwalton » Wed Aug 27, 2014 10:20 am
The word used in Jonah 1.17 is "large fish" and could be used of any sea creature. The great white shark is common in the Mediterranean, and has a very large throat. If that were the "great fish," it would be unusual, though possible, that Jonah didn't get chewed. Case studies from historical writings about men being swallowed by fish and surviving are less than convincing. There is no other fish, other than the Great White, natively known to the Mediterranean with a gullet size large enough to accommodate a human.
There is the possibility of a whale shark, which has easily enough gullet size to get a man in his mouth. They average about 32' long, and its mouth is 5' wide. They are not normally found in the Mediterranean, but has been known on occasion to wander outside its normal area. That's a possibility.
Regardless of gullet sizes, whales, sharks, species native to the Mediterranean, etc., the event is clearly portrayed in the text as a special act of God, and so there is nothing about the story that makes us expect there is anything regular or ordinary about the fish. It could have been a miraculous creation for Jonah. God often uses normal things in other-than-normal ways, however, and so many options are possible. Since the Mediterranean is salt water, the same as the ocean, it could easily have been another sea creature (as I have mentioned), as it is well known that sometimes creatures veer far away from their normal courses.
As far as how long he was in there, the 3 days and 3 nights has been interpreted as being figurative, and it may be, but there is no other example in the OT where 3 days can be shown to be figurative. We do know, however, that numbers are often treated numerologically in the Bible and not always necessarily literally. It's hard to know what is the case here.