I am not a diver, I've just read and seen enough about sharks and their attacks on humans to know there's enough contrary evidence to consider this diver isn't

I am not a diver, I've just read and seen enough about sharks and their attacks on humans to know there's enough contrary evidence to consider this diver isn't exactly a scientist. My issue is he's making generalized statements about sharks based on years of diving in a specific region: the icy waters of cape town. It seems perfectly obvious to me that his observation can equally be explained as "the sharks in the icy waters of cape town may be generally well-fed". Frankly the article is nothing more than a thinly veiled advertisement for a book, and probably lacked substance if it stayed purely on-topic regarding the octopus. I expect the book to suffer similarly.