Glass Worms (Chaoborus Or Corethra Larvae)
These worms, also referred to as ghost worms, are transparent and aren't unlike the blood worms with out the blood. They're about the exact same length, i.e. 0.5 to 0.75 inches.
They're discovered generally in ponds shaded by overhanging foliage and willows, where they could be seen lying in a parallel position a couple of inches below the surface.
They suddenly disappear only to appear about a foot away, but facing the opposite direction. Their appearance is certainly ghost-like. When viewed in strong light they're practically invisible. The main benefit of the glass worms is that they're procurable during the winter months. They swim about in the water in search of food which could be anything from daphnia to rotifers.
They're caught in a lot the exact same manner as daphnia by sweeping the net via the water; this should be done steadily and swiftly. When captured they appear like a mass of jelly in the net end.
It is not every pond which will yield glass worms, but when they're discovered they're generally in fantastic numbers. They lend themselves very well to storage. If much more than could be utilized instantly are captured, the remainder could be stored in a little aquarium. Overcrowding appears to have small or no effect on them.
Despite their name these creatures are not worms, but are in reality larvae of the plumed gnats.