Xiphactinus (5e Creature)

Xiphactinus

Large beast, unaligned Armor Class 14 (natural armor) Hit Points 52 (7d10 + 14) Speed 0 ft., swim 50 ft. STR DEX CON INT WIS CHA 16 (+3) 15 (+2) 14 (+2) 2 (-4) 12 (+1) 5 (-3) Skills Perception +3, Stealth +4 Proficiency Bonus +2 Senses darkvision 60 ft., passive Perception 13 Languages — Challenge 3 (700 XP) Blood Frenzy. The xiphactinus has advantage on melee attack rolls on any creature that doesn't have all its hit points. Water Breathing. The xiphactinus can only breathe underwater. ACTIONS Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 16 (3d8 + 3) piercing damage. Thrash and Flee (Recharge 5–6). The xiphactinus makes a bite attack and then swims up to half its speed without provoking opportunity attacks.

A torpedo-shaped predator from the Cretaceous seas, xiphactinus was a large bony fish armed with long, interlocking fangs and a notoriously bad attitude. Reaching lengths of up to 20 feet, it was swift, aggressive, and known for swallowing prey nearly half its size whole. Despite lacking the armor of a dunkleosteus or the bulk of marine reptiles, xiphactinus made up for it with pure speed and jaw strength. It patrolled warm coastal waters and shallow inland seas, preying on smaller fish, ammonites, and even juvenile marine reptiles. Fossil evidence suggests it sometimes died trying to consume prey too large to swallow—a testament to its ferocity, if not its intelligence. Few natural predators could take on an adult xiphactinus, though large mosasaurs or groups of plesiosaurs likely filled that role in ancient oceans.

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