Coloured scanning electron micrograph (SEM) of a passion flower (Passiflora caerulea) pollen grain. Pollen grains are the male gametes (sex cells) of a plant. Magnification: when printed 10 centimetres wide. LOOKS LIKE A BASEBALL.
Water Bear Photograph - Water bears (or tardigrades) are tiny invertebrates that live in aquatic and semi-aquatic habitats such as lichen and damp moss. They require water to obtain oxygen by gas exchange.
Tardigrade, also known as the "water bear." These long animals can survive some of the most extreme environmental conditions (including the vacuum of space) by going into a state of complete metabolic shut-down called cryptobiosis.