A colored scanning electron micrograph of a parasitic tapeworm. The scolex (head) has suckers and a crown of hooklets that the worm uses to attach itself to the inside of the intestines of its host.

A colored scanning electron micrograph of a parasitic tapeworm. The scolex (head) has suckers and a crown of hooklets that the worm uses to attach itself to the inside of the intestines of its host.