Kazrith

A Kathrith is an aquatic demon that can be found prowling murky lakes, underground waterways, and flooded tunnels.

Abilities
Kazriths use tremorsense to detect enemies, after locating a target it surfaces and attacks, poisoning its victim. The demon waits until the prey is weak from the poison, then resurfaces and finishes it off. This demon is also a skilled burrower, using the acid in it's pores to excrete a trail of acid in the tunnels it makes.

Ecology
Most kazriths dwell in the Elemental Chaos, but some occasionally find natural gates leading into Toril. Kazriths create vast networks of flooded tunnels between lakes and other bodies of water. They can then travel easily from habitat to habitat. These tunnels are usually not far below ground so the monsters can sense potential prey walking above them.

Society
These demons are often found in the company of other sinister aquatic monsters.