I got curious to know the answer after I saw this.

Almost eaten by a whale.

Most Species of Whales have throats that are far too small to be able to swallow a large mammal the size of an adult.

Assuming you were diving and got swallowed by a blue whale, in one piece. It is nice to know that you would likely not tear apart into pieces, as the blue whale has Baleen plates instead of regular teeth.

These row of plates that are covered with hair serves as a filter for the krill from the thousands of litres that the whale swallow in a single gulp. Having forced the water out, the whale then licks the trapped prey with its massive tongue.

In the other hand, you have a high chance of dying out of the force applied to you when the whale crushes its plates when closing its mouth. But even if that happens, it would not be able to swallow you. A blue whale's gullet is a largely a maximum of 10 cm in diameter 10 cm in diameter. That would not even cover the head of a newborn baby.

In fact, even the scary large whale shark, has a relatively small throat. Making it impossible for it to consume a human. Its diet mainly consists of small fish and fish eggs.

The only known whale that has a large enough throat to swallow an adult is the Sperm Whale. But this whale species usually only hunt its prey 1000 meters deep in the ocean, making even a single human encounter extremely unlikely. And, until today, there has never been a single recorded incident of that happening.

So the biggest threat is dying from the squash applied by the whale if it tries to eat you. But, supposedly, you survive that, and you held a diving gear with enough oxygen for few hours. Another danger you should be worried about is when the whale dives you to a depth where you lunges might collapse. According to Wikipedia, in technical diving, a depth below about 60 metres (200 ft) is the maximum safe depth before your body start experiencing oxygen toxicity.

Whales dive in much deeper distances than that.

So it's very unlikely, but if it happens, may the force be with you!


Source: QUORA