3 Species Examples - Annelid Leeches

1. Found in Marine environment
2. Blood-sucking parasites, mainly on fish
3. Have suckers at both ends of their bodies and use these to move
4. Have a fixed maximum number of segments while other groups of annelids add segments throughout their lives.
5. Leeches are sometimes used for medical reasons.  They have been used to assist in microsurgery, and their saliva has provided anti-inflammatory compounds and several important anticoagulants one of which also prevents tumors from spreading.