Jonah wasn't swallowed by a whale. Whales have very big mouths and very small throats the size of a grapefruit.Have we even been able to establish whether Jonah's big fish story is true yet?
Jonah was swallowed by a leviathan. < Very large fish, some having very, very large throats and stomachs and bladders that gulp down oxygen. When their stomachs start to fill with acid, they puke it out.
Jonah was puked out.