Floating plants are not attached to the bottom. Floating plants come in sizes from very small, such as duckweed, to over a foot in diameter, like water hyacinth. Most have roots that hang in the water from the floating green portions.

 Duckweed

Duckweed

 Salvinia

Salvinia

 Water Hyacinth

Water Hyacinth

 Water Lettuce

Water Lettuce

 Watermeal

Watermeal