Much as carnivory in plants has evolved to help them live in nutrient-starved environments, carnivorous clams have evolved to suck up much larger prey than their filter-feeding ancestors could deal with, allowing them to live in deep, food-scarce environments. The tiny Trigonulina ornata lives off the Brazilian coast from depths from 20-850m and specializes in vacuuming up crustaceans called ostracods. It even sticks debris to its shell to camouflage itself, like a hunting blind! #clamFacts
