Platypus or Duck-billed platypus, Ornithorhynchus anatinus, eating a Australian freshwater crayfish, Cherax quadricarinatus. They also eat worms, insect larvae, freshwater shrimps that it digs out of the riverbed with its snout or catches while swimming. It uses cheek-pouches to carry prey to the surface, where it is eaten. The platypus needs to eat about 20% of its own weight each day, which requires it to spend an average of 12 hours daily looking for food. They have a sense of electroreception locating their prey in part by detecting electric fields generated by muscular contractions. Queensland, Australia - Composite image