Squark

''This crimson horror from the deep is a cross between a giant squid and a monstrous shark. A great, fang-filled snout with dark, roving eyes plows through the water, while a thrashing mass of tentacles emerges from the beast’s rump, writhing in hungry anticipation.''

Combat
The squark generally only attacks those who wander into its territories at the heart of the Last Sea, but it has also been known to make sporadic assaults on Nesthaven and other settlements along the shores. It prefers to strike unseen, using its psionics to wreak havoc with its foes and then striking hard and fast with its tentacles. Those foes that are not subdued by its crushing grasp are transferred to its jaws and shredded. Against vessels of size Gargantuan or smaller, the squark can attempt to grapple the entire ship, crushing it and dragging it beneath the waves.

An opponent can attack the squark's tentacles with a sunder attempt as if they were weapons. The squark's tentacles have 20 hit points each. Severing one of the squark's tentacles deals 10 points of damage to the creature. The squark usually withdraws from combat if it loses five tentacles. The creature regrows severed limbs in 1d10+10 days.

When sorely threatened, the squark will flee to the sea bed, over a mile beneath the surface, covering its tracks with jets of ink. If still under threat, it will use its psionics to access its cavernous lair, flooded and buried in Marnita's bedrock.

Description
The squark is a millennia old monstrosity from Athas' past. None know whence it originally came or how old it truly is, but is apparently wandered into the waters of what would become Athas' Last Sea some time before the Mindlords sealed that place off from the rest of the world. The creature's age, therefore, must be reckoned, at the very least, to be nearing ten thousand years.

Its body is that of a monstrous shark, with a great cluster of ten tentacles where the shark's rear fins and tail would be. Its jaws are filled with jagged teeth, and two of its tentacles, which are larger than the rest, are lined with wicked barbs.

The squark has no natural enemies (except, perhaps, the Mindlords), but it thankfully needs very little food to survive. Extremely intelligent, it prefers instead to roam the deeps of the Last Sea, pondering eon-old mysteries or slumbering in its subterranean lair, buried in the bedrock beneath the ocean floor.

The squark's body is just over 20 feet long, but its tentacles stretch out a further 60 feet. It weighs 200 tons. The creature is a bloody crimson from tentacle tip to snout, save for its pinkish suckers and black eyes.

Squark Society
Although it could quite easily take control of the Last Sea, the squark knows that this would only earn the ire of the Mindlords and spell its doom. The Mindlords approached the squark millennia ago and promised it its freedom, if it would respect their rule and the lives of their citizens. For the most part, the bargain still holds.

The dwellers of the lands of the Last Sea know of the squark, but it occupies a semi-legendary status in their world view. Few have seen the beast and lived, and sailors upon the Last Sea have learned to avoid the deepest reaches in the heart of the Sea, for the squark claims these as its own and is not above claiming the persistent offender – and his vessel – for its own. Amongst the lizardfolk of the Last Sea, it is considered a rite of passage to seek the squark and touch it on its nose. Needless to say, more than one aspiring lizardfolk hero has not returned from such a venture.