The florid crown of Utricularia vulgaris, who by means of creating a negative pressure region within tiny sacks in the water, via active osmosis, sucks in prey in under a 100th of a second. One of the most successful plants within the carnivorous flora niche. Quite beautiful flowers for us to look at, but if your a Daphnia (water flea) or Caenorhabditis elegans (nematode) then watch out.
Small adult pitcher on young plant, recently opened, with red coloration just starting. The pitcher is lined with downward-pointing hairs that aid in insect capture. The prominent structure at the top of the pitcher is the nectar spoon.