Sources
CR
Type
Size
Alignment
Movement

Obliteros

Huge Beast, Chaotic Evil

Armor Class 13 (natural armor)
Hit Points 126 (11d12 + 55)
Speed 0 ft., swim 50 ft.
STR
23
+6
DEX
11
+0
CON
21
+5
INT
10
+0
WIS
10
+0
CHA
5
-3
Skills Perception +3
Senses blindsight 60 ft., passive Perception 13
Languages Aquan
Challenge 5 (1,800 XP)

Traits

Blood Frenzy. Obliteros has advantage on melee attack rolls against any creature that doesn't have all its hit points.

Water Breathing. Obliteros can breathe only underwater.

Actions

Bite. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit:22 (3d10 + 6) piercing damage.

Lore

An awakened Giant Shark who inhabits the harbor around Mistshore.