The cryohydra was a relative of the standard hydra that was able to breathe frost from its heads.[1]


Cryohydras were known to inhabit the Umber Marshes in Aglarond.[3]



  1. 1.0 1.1 1.2 1.3 1.4 Skip Williams, Jonathan Tweet, Monte Cook (July 2003). Monster Manual 3.5. (Wizards of the Coast), pp. 156–157. ISBN 0-7869-2893-X.
  2. Gary Gygax (December 1977). Monster Manual, 1st edition. (TSR, Inc), pp. 53–54. ISBN 0-9356-9600-8.
  3. Richard Baker, Matt Forbeck, Sean K. Reynolds (May 2003). Unapproachable East. (Wizards of the Coast), p. 94. ISBN 0-7869-2881-6.