title: Protohydra
text: # Protohydra
  
  Protohydra is a genus of cnidarians belonging to the family Protohydridae.
  
  The species of this genus are found in Europe and Northern America.
  
  Species:
  
  * Protohydra caulleryi Dawydoff, 1930
  * Protohydra leuckarti Greeff, 1870
  