Hemichordata:

Organization: Organ level

Symmetry: Bilateral

Coelom: present (coelomates)  

Segmentation: Absent

Arrangement of embryonic layers: Triploblastic

Digestive system: Complete

Circulatory system: Present

Respiratory system: Present

Habitat: Marine

Sexuality: Dioecious (sexes are separate).

 Notochord: Present

 Reproduction: Sexual (oviparous)

Fertilization: External (indirect)

Respiratory organ: Gills

Excretory organ: Proboscis gland

Distinctive features: 

• This phylum has a small group of worm-like marine animals.
•  The body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk.