A diver gets swallowed by an 80-foot, 60-ton sperm whale in Daniel Kraus' Whalefall, which is getting a movie adaptation. Here's the scoop.
The book is described as The Martian meets 127 Hours. The storyline follows “a scuba diver in search of his deceased father’s remains who gets swallowed by an 80-foot, 60-ton sperm whale and has only one hour to escape before his oxygen runs out. It’s a tale about a young man who has given up on life — only to find a reason to live in the most dangerous and unlikely of places.”
For a moment I thought this was going to be a spin-off story about the whale who suddenly popped into existence in Hitchhikers Guide to the Galaxy. Unfortunately not.