What situational irony occurs in the the colomber by dino buzzati?

Situational irony occurs when what you expect is not what it actually is.

In The Colomber, the main character wanted to become a sea captain but because he was able to see the colomber, he was warned by his father not to go to sea because the presence of the colomber means that the main character is doomed. They believed that the presence of the colomber is a sign of incoming death to the person who sees it.

At the end of the story, the colomber told the main character that the reason he was following the main character was because he was tasked by a sea god to give the main character a pearl to keep for good fortune in life.

It is ironic because the main character believed that the colomber brings bad luck when it brings the opposite.