With Mallard foraging on mosquito fern.
Orlando Wetlands Park, Orange County, FL, April 2015.
Floating in an artificial pond.
With algal bloom.
Azolla (mosquito fern, duckweed fern, fairy moss, water fern) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized, looking nothing like conventional ferns but more resembling duckweed or some mosses.