Grapefruit in the bay. Kangaroo Bay, Bellerive. February 2012. Each Watery Wednesday must feature all sorts of flotsam and jetsam. I am not sure whether today's grapefruit constitutes flotsam or jetsam . The romantic in me would like to think that it was an intriguing bit of flotsam , making it all the way to Bellerive via the great Southern Ocean current after a Chilean fruit tender struck a rogue squid or something or other. It is of course more likely to be jetsam , cast aside by some foolish rapscallion as part of some sophomoric prank. BAH! [Of course, maritime law seems flotsam as floating wreckage of a ship or its cargo . Conversely, jetsam is part of a ship, its equipment, or its cargo that is purposefully cast overboard or jettisoned to lighten the load in time of distress and that sinks or is washed ashore .]