Scrag

Scrags, also known as marine trolls, were an aquatic version of troll. There were two varieties: freshwater trolls and saltwater trolls.

Nomenclature
"Scrag," "aquatic troll," and "marine troll" could refer to any troll that lived in water. However, "scrag" often referred specifically to a freshwater troll, also called a "river troll." In that case, a freshwater troll was called a "marine scrag."

Description
Freshwater trolls were smaller than typical trolls, whereas saltwater trolls tended to be about the same size. All scrags had smaller and weaker arms than those of typical trolls.

Abilities
Scrags could only regenerate when in water: Freshwater scrags had to be in freshwater, and saltwater scrags had to be in saltwater.