I knew that cavitation was a concern for submarines, pumps, ships, torpedoes, etc. It makes perfect sense that it could become an issue for any fast-swimming aquatic life as well.. but I don't think I ever put two and two together on that. (I guess I assumed no aquatic life could swim fast enough to have cavitation concerns)
Very interesting, but I think you meant to submit this to Reddit, not HN.
Sorry, could not find an article that provided more insight into details of cavitation and still has visual appeal.