Orcas, or killer whales, are deadly and beautiful apex predators.

While this isn't the first time a human has ended up in a humpback whale's mouth, it's not an everyday occurrence. "The whale was just as surprised as the kayaker.” ...

A humpback whale appeared to swallow then spit out a kayaker in a viral video filmed off the coast of Chile. But was he actually in any danger?

Test your knowledge about the human digestive system... from the mouth to the bum! Help Dr Chris, Dr Xand and Dr Ronx on their fantastic voyage.