This serpentine creature is about 20 feet long, nose to tail, with two sets of large flippers and a wide body. A finned crest runs the length of its back, head to tail. The body is dark blue with a lighter underbelly, often tinged with rust or green highlights.
Brine Sea Serpent CR 14
Str 21, Dex 15, Con 18, Int 7, Wis 13, Cha 14
Base Atk +16; CMB +23 (+27 grapple); CMD 36 (can’t be tripped)
Feats Ability Focus (breath weapon), Combat Reflexes, Dodge, Improved Initiative, Lightning Reflexes, Mobility, Skill Focus (Perception), Swim-By AttackB, Toughness
Skills Bluff +21, Diplomacy +9, Intimidate +11, Perception +26, Stealth +13, Swim +22
Languages Aquan, Draconic
Once per hour, a brine sea serpent can release a blast of acid and salt water in a 50-foot cone. Creatures in the area take 10d8 points of acid damage. A successful DC 24 Reflex save reduces the damage by half. The save DC is Constitution-based, and includes a +2 bonus from the Ability Focus feat.
Environment any aquatic
Treasure double standard
The brine sea serpent is a relatively stupid and aggressive predator of the deeps, and is the only sea serpent with a breath weapon.
The brine serpent lives in cave lairs on the ocean floor, where it maintains a hoard much like a dragon. It often lives in seas known for their stormy conditions, since it enjoys feeding on humans capsized from boats. Sometimes it even attacks ships directly if it is hungry. It also searches sunken ships for objects of interest to add to its hoard. The eyes of a brine serpent are small, but it possesses large ears, and has exceptional hearing.
Against lone prey, the brine serpent likely closes and attack with its bite.
When confronting larger groups it uses this breath weapon first – the brine sea serpent has a special organ that harvests sodium from seawater and stores it in concentrated form in a gland in its cheek. It generally avoids constricting attacks unless attacking large opponents that do not die from its poisonous bite. The brine sea serpent may also use the constriction attack against small sea vessels if it is very hungry.
Brine Sea Serpent from the Tome of Horrors Complete, Copyright 2011, Necromancer Games, Inc., published and distributed by Frog God Games; Authors Scott Greene and Patrick Lawinger.