31. Salvinia -Effect surfaces have been proven to quickly and eficiently adsorb oil and can be used for oil-water separation applications32. The leaves of " Salvinia minima " are small and oval, ranging from 0.4 to 2 centimeters in length. 33. In order to protect native environments, efforts to eradicate or contain the spread of " Salvinia minima " have been attempted. 34. When introduced to a new environment, " Salvinia minima " can quickly reproduce and form expansive mats on the top of waterways. 35. "Salvinia minima " can be a nuisance to recreational watercraft, especially kayaks and canoes, in areas where it grows densely. 36. Biological control efforts for " S . minima " have been centered around the tiny salvinia weevil, " Cyrtobagous salviniae ". 37. Recent sources include both " Azolla " and " Salvinia " in Salviniaceae, although each genus was formerly given its own family. 38. The stem-borer moth is a species native to the southern United States and is known to feed on other salvinia species in the same genus. 39. Among those " most wanted " are the Asian longhorned beetle, eucalyptus lerp psyllid, Japanese bee tle, pink hibiscus mealybug and giant salvinia . 40. In 2009, Bistineau and Caney Lakes were again engulfed by the non-native giant salvinia fern, which chokes up the water and reduces its level.