Giant Microbes Tide (Alexandrium Tamarense) Educational Plush, Red Giant Microbes - Red Tide (Alexandrium tamarense) Educational Plush Toy Super Hot Plush Toy - They are all the rage! Cute and Educational Laugh with your friends & family as you give them something unique! They make great learning tools for parents and educators, as well as amusing gifts for anyone Each Plush doll is 5-to-7 inches and has an image of the real microbe it represents, as well as information about it