He enjoyed diving, and then a huge shadow appeared behind him: "That's why I'm afraid of the ocean!"
The sea is a synonym for vacation, relaxation, and escape from everyday life for many, but little thought is given to how frightening it can actually be.

TL;DR
- A diver encountered a large, shadowy creature while underwater, causing fear among online viewers.
- The creature's appearance triggered discussions about the potential dangers of the ocean.
- One commenter identified the shadow as a whale shark, noting its harmless nature and diet of plankton.
- Whale sharks are the largest fish species, existing for millions of years and inhabiting tropical oceans.
- Despite their size, whale sharks are not dangerous to humans.