👉 Hydrachnidae are a group of small to medium-sized, aquatic reptiles that belong to the family Hydraenidae. This family includes several distinct species including the common garter snake (Hydrangea canadensis), which is native to North America and Canada. Other members of this group include the snakehead snake (Hydrangus longiura) and the northern garter snake (Hydrangea nebulosa). The Hydrachnidae