Basilosaurus
CR: 12 XP: 19,200
N Gargantuan animal
Init: +5 Senses: blindsense 60 ft., low-light vision Perception: +25
Defense
AC: 27, touch 7, flat-footed 26 (+1 Dex, +20 natural, –4 size)
hp: 161 (17d8+85)
Fort: +17 Ref: +11 Will: +7
Offense
Speed: swim 40 ft.
Melee: bite +23 (4d6+15/19–20 plus grab), tail slap +18 (2d8+7)
Space: 20 ft. Reach: 20 ft.
Special Attacks: swallow whole (4d6+15 bludgeoning damage,, AC 20, 16 hp)
Statistics
Str: 41 Dex: 12 Con: 21 Int: 2 Wis: 11 Cha: 6
Base Atk: +12 CMB: +31 CMD: 42
Feats: Diehard, Endurance, Great Fortitude, Improved Critical (bite), Improved Initiative, Iron Will, Power Attack, Skill Focus (Perception), Vital Strike
Skills: Perception +25, Swim +31, Racial Modifiers +4 Perception
SQ: hold breath
Ecology
Environment: any oceans
Organization: solitary, pair, or pod (3–10)
Treasure: none
Description
Despite their saurian name, basilosauruses are in fact oceanic mammals, and at 60 feet in length are highly formidable beasts of the sea. In appearance, they resemble greatly elongated whales, but with long, toothed jaws resembling an alligator’s.
Inexperienced observers often confuse a basilosaurus with a sea serpent or water orm— and in all fairness, in the aftermath of a basilosaurus attack on an unsuspecting ship, such distinctions are largely academic anyway.
A basilosaurus relies as much on vision as echolocation to find prey, but sometimes mistakes smaller ships for food. Basilosauruses have few natural predators; only supernatural monsters like krakens, thalassic behemoths, and the largest of sea serpents can truly threaten a fully grown one.
Megafauna, Megalania This gigantic lizard has short but powerful limbs, a muscular tail, and a spiny crest that runs the length of its body.