Ancient Sea Dragon CR 17
Speed 40 ft., fly 250 ft. (clumsy), swim 100 ft.
Melee bite +33 (4d6+18), 2 claws +32 (2d8+12), gore +32 (2d8+18), tail slap +29 (2d8+18)
Space 20 ft.; Reach 15 ft. (20 ft. with bite and gore)
Special Attacks breath weapon (60-ft. cone, 20d6 fire damage, DC 28), crush (DC 28, 4d6+18), tail sweep (DC 28, 2d6+18), torrent breath
Spell-Like Abilities (CL 23rd; concentration +30)
Spells Known (CL 15th; concentration +22)
7th (5/day)—insanity (DC 24), plane shift (DC 24)
6th (7/day)—chain lightning (DC 23), freezing sphere (DC 23), forceful hand
5th (7/day)—cone of cold (DC 22), dream, mind fog (DC 22), persistent image (DC 22)
4th (7/day)—black tentacles, confusion (DC 21), lesser geas (DC 21), rainbow pattern (DC 21)
3rd (8/day)—haste, hold person (DC 20), lightning bolt (DC 20), sleet storm
2nd (8/day)—gust of wind (DC 19), mirror image, obscure object, scare (DC 19), see invisibility
1st (8/day)—charm person (DC 18), chill touch, color spray (DC 18), expeditious retreat, sleep
0 (at will)—acid splash, daze (DC 17), detect magic, ghost sound, mage hand, message, ray of frost, read magic, resistance
Str 35, Dex 8, Con 25, Int 24, Wis 25, Cha 24
Base Atk +23; CMB +39; CMD 48 (52 vs. trip)
Feats Alertness, Flyby Attack, Great Fortitude, Greater Weapon Focus (bite), Improved Initiative, Lightning Reflexes, Lunge, Multiattack, Snatch, Weapon Focus (bite, claws, gore)
Skills Bluff +33, Diplomacy +33, Fly +11, Intimidate +33, Knowledge (arcana, geography, history, nature) +33, Perception +37, Sense Motive +37, Stealth +13, Survival +33, Swim +46
Languages Aquan, Auran, Celestial, Common, Draconic, Elven, Gnome, Sylvan
SQ change shape, sea strider, unfettered swimmer, water breathing
Instead of a cone of super-heated steam, a very young or older sea dragon can breathe a line of pressurized water twice the length of the sea dragon’s cone breath weapon. This line deals bludgeoning damage.
A juvenile sea dragon gains a 10-foot bonus to its swim speed. The sea dragon’s swim speed continues to increase by an additional 10 feet every two age categories. Furthermore, while swimming, the sea dragon is treated as if under the effects of the spell freedom of movement.
Environment any water