Killer Whale

Huge Beast, Unaligned

STR
19 (+4)
DEX
10 (+0)
CON
13 (+1)
INT
3 (-4)
WIS
12 (+1)
CHA
7 (-2)
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.

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Killer Whale

Source: Monster Manual (2014), p. 331 - Licenses and attribution