Killer Whale
Huge Beast, unaligned
Armor Class 12 (natural armor)
Hit Points 90 (12d12+12)
Speed swim +60
Challenge 3
STR
19
+4
DEX
10
+0
CON
13
+1
INT
3
-4
WIS
12
+1
CHA
7
-2
Skills perception +3
Senses blindsight 120 ft., passive Perception 13
Special Abilities
Echolocation. The whale can't use its blindsight while deafened.
Hold Breath. The whale can hold its breath for 30 minutes
Keen Hearing. The whale has advantage on Wisdom (Perception) checks that rely on hearing.
Actions
Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 21 (5d6 + 4) piercing damage.
Source: 5e Core Rules · OGL/Open