uncommon ne huge aquatic beast 

Perception +19; darkvision

Skills Athletics +21, Stealth +19, Survival +17 (+19 to Track)

Str +7 Dex +4 Con +5 Int -3 Wis +4 Cha +0

Luminous Lure (aura, emotion, enchantment, incapacitation, light, mental, primal) 30 feet. The mamlambo emits dim light from its skin. A creature that enters or begins its turn in the aura must attempt a DC 23 Will save. Humanoids take a –2 penalty to this saving throw. Regardless of the save's result, the creature is temporarily immune for 10 minutes. Critical Success The creature is unaffected.Success The creature is slowed 1 for 1 round.Failure The creature is fascinated, and for as long as it is in the aura it must spend at least 1 of its actions on each of its turns to move closer to the mamlambo as expediently as possible, while avoiding obvious dangers. If the creature ends its movement or turn adjacent to the mamlambo, it is slowed 1 until it is out of the aura or until the mamlambo makes a Strike against it. The target can attempt a new Will save at the beginning of each of their subsequent turns, and on a success, the effect ends.Critical Failure As failure, but the creature must spend each of its actions moving closer to the mamlambo, and if it ends its movement or turn adjacent to the mamlambo, it is paralyzed until it is out of the aura or until the mamlambo makes a Strike against it.

AC  28; Fort +19, Ref +20, Will +15

HP 155

Attack of Opportunity [R] Tail only.

Speed 10 feet, swim 40 feet

Melee [>] jaws +21 (reach 10 feet), Damage 2d8+11 piercing plus Improved Grab

Melee [>] tail +21 (agile, reach 15 feet), Damage 2d6+11 bludgeoning

Aquatic Ambush [>]

Face Eater [>] Requirements The mamlambo has a creature grabbed or restrained, or there is a dying, immobilized, or unconscious creature within the mamlambo's reach; Effect The mamlambo deals 2d8+11 piercing damage to the creature (DC 28 basic Fortitude save). On a failure, the creature also takes an additional 2d6 persistent bleed damage, or 4d6 persistent bleed damage on a critical failure.

An Unusual Phobia Mamlambos have an unusually strong aversion to river otters, despite being much larger and more dangerous. Since mamlambos rarely remain in an area inhabited by otters for long, river-dwelling people in the Falalugreid Expanse often keep trained otters to aid in fishing and to ward off the potential presence of a mamlambo.

LOME, page 304.