AC 12 (natural armor)
HP 75 (10d12+10; bloodied 37)
Speed 0 ft., swim 60 ft.
Proficiency +2; Maneuver DC 14
Senses blindsight 120 ft., passive Perception 12
Languages —
Echolocation. The whale can’t use blindsight while deafened .
Hold Breath. The whale can hold its breath for 30 minutes.
Keen Hearing. The whale has advantage on Perception checks that rely on hearing.
ACTIONS
Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 14 (3d6+4) piercing damage. If the target is a creature, it is grappled (escape DC 14). Until this grapple ends, the whale can’t bite another target and it has advantage on bite attacks against the creature it is grappling.
Beasts are natural animals whose existence and abilities are nonmagical. A bear and a tyrannosaurus rex are both beasts.