Constrict (Ex): On a successful grapple check, a chuul deals 3d6+5 points of damage.

Improved Grab (Ex): To use this ability, a chuul must hit with a claw attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can constrict or on its next turn transfer a grabbed opponent to its tentacles.

Paralytic Tentacles (Ex): A chuul can transfer grabbed victims from a claw to its ten- tacles as a move action. The tentacles grapple with the same strength as the claw but deal no damage. However, they exude a paralytic secretion. Anyone held in the tentacles must succeed on a DC 19 Fortitude save each round on the chuul's turn or be paralyzed for 6 rounds. The save DC is Constitution-based. While held in the tentacles, paralyzed or not, a victim automatically takes 1d8+2 points of damage each round from the creature's mandibles.

Amphibious (Ex): Although chuuls are aquatic, they can survive indefinitely on land.

Skills: A chuul has a +8 racial bonus on any Swim check to perform some special action or avoid a hazard. It can always choose to take 10 on a Swim check, even if distracted or endangered. It can use the run action while swimming, provided it swims in a straight line.