Animals with long, skinny bodies are often called “worms,” but there many kinds of worms—even in the ocean. Annelids (segmented worms) include garden earthworms, their ocean relatives come colors, shapes, and sizes. Some so small that they live between grains sand, while others can be longer than a human eat fish! Marine worms essential to food web, as both predators prey. They help create home...

background: echinococcus granulosus , a zoonotic cestode parasite, causative agent of hydatid cyst is endemic in many parts of the world including the middle east. study on different aspects of this parasite is very important and valuable. however, working with adult worms which their habitat situated in the small intestine of canids, is dangerous and risky. achieving such risky situa­tion need...