No known species of whale has a throat large enough for a human to be swallowed whole and survive inside for any period of time. Most whales, including the largest, the blue whale, have throats that wouldn't allow a human to pass through. They feed primarily on small prey like krill.

However, there is one real-life candidate that might be somewhat plausible: the sperm whale. Unlike baleen whales, sperm whales have a much larger esophagus, and they are known to swallow giant squid whole. In theory, a human could fit inside a sperm whale’s throat. However, surviving inside would be another issue entirely—stomach acids, lack of air, and the general digestive process would make it impossible for someone to live inside for three days.

The biblical story of Jonah and the whale (or "great fish," as the original Hebrew text states) is likely meant to be metaphorical, symbolic, or miraculous rather than a literal natural event. Some interpretations suggest it represents rebirth, redemption, or divine intervention rather than an actual case of marine biology.

That said, there are historical tall tales of sailors being swallowed by whales and surviving, but none have been verified scientifically. The most famous one, involving James Bartley in the 19th century, has been largely debunked as a hoax.

So while a whale large enough might exist (like a sperm whale), the reality of surviving inside one for days? Not happening.