And that's the counter-intuitive thing about water. Whereas "hot things rise" is true for almost everything, it isn't for water... at least not in the area around freezing.
Hot things rise because they are less dense than cold. Typically things get more dense the colder they get. Water actually breaks this rule between 4 and 0 degrees C. As you approach freezing, the "slightly warmer" molecules actually sink to the bottom.
Redwall had a sweet early 90s website. There was a little sound clip of Brian Jaques introducing himself and welcoming you to Redwall Abby (on the internet).
So I GOT to learn that from the man himself.
I figure that .wav file must exist SOMEWHERE still. It belongs in a museum.