DrthakCreature 6
Perception +15 (echolocation (precise) 120 feet, sensitive echolocation (precise) 120 feet)
Languages none
Skills Athletics +16, Stealth +17, Survival +13
Str +4, Dex +5, Con +4, Int -3, Wis +3, Cha -1
AC 23; Fort +14; Reflex +17; Will +11;
HP 110
Speed 20 feet (swim 40 feet)
Immunities visual
Resistances Sonic 5
Jaws
+16 (+11, +6) to hit (unarmed) 2d8+4 PiercingScreech
+17 (+12, +7) to hit (sonic) 4d6 SonicAuditory Hunter

Trigger A creature within 15 feet uses an auditory action
Effect The drthak Strides or Swims towards the creature.
Deep BreathThe drthak can hold its breath for about 2 hours.
Pull UnderThe drthak can Swim at half Speed while it has a creature Grabbed or Restrained in its jaws, carrying the creature along with it.
Sensitive EcholocationThe drthak can use its hearing as a precise sense with the listed range. If the drthak takes sonic damage beyond its resistance, its senses are overloaded and all creatures are Concealed from it for 1 round.
Bubble Burst
(sonic, water)Requirements The drthak is underwater
Effect The drthak uses sonic power to push aside water in a 30-foot emanation, which then collapses in a crushing torrent. All creatures in the area, other than the drthak, take 3d10 bludgeoning damage (DC 24 fortitude save).
Resonant JawsWhen the drthak misses a screech Strike against a creature Grabbed or Restrained in its jaws, it deals that creature 2d6 sonic damage.
Dischorans are a group of predators who hunt via focused sound. Though they possess protuberances that resemble eyes, these are actually auditory sensory organs that can pick up even the slightest sound and are used to locate prey with pinpoint accuracy.
Only a few types of dischorans have been identified, but they all share unifying features: front-facing pseudo-eyes, deceptive speed, and ravenous hunger. Their sensitivity to noise combined with their ability to weaponize sound are likely the primary reasons dischorans spend most of their time alone.
Drthaks are aquatic predators with long trailing fins that are rarely seen, clinging to coasts and estuaries where the high silt content makes them practically invisible to predators and prey alike. Some have been known to come inland, tracking their prey miles upriver before striking. The underwater environment alters the typical dischoran hunting behavior, with drthaks creating bubbles that implode to stun prey.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
BeastA creature similar to an animal but with an Intelligence modifier of –3 or higher is usually a beast. Unlike an animal, a beast might be able to speak and reason.