Went out for an hour near sunset, and the jellies have started to arrive. These are not fish made of strawberry jelly. These are translucent white, three to six inches across, the big ones streaming tentacles that reach eighteen inches long or more. They're hard to take photos of--the camera wants to focus at the light reflecting from the water's surface, so the jellyfish shows up as a ghostly blob. Right now there are relatively few of them, but soon it'll be about three jellyfish per cubic foot of water.
Also saw an osprey, some gulls, and some little birds, white and black with sharp wings, who pulled up into a hover and then dropped straight down into the water. And a heron who was rather annoyed when I slipped in view around some marsh grass only ten yards away from him; he hopped into the air and flew off, croaking.