Sea Lion

Large Monstrosity, Unaligned

AC: 15

Initiative: +2 (12)

HP: 90 (12d10 + 24)

Speed: 10 ft., swim 40 ft.

STR: 17 (+3)
DEX: 15 (+2)
CON: 15 (+2)
INT: 3 (-4)
WIS: 12 (+1)
CHA: 8 (-1)

Skills: Perception +4, Stealth +5

Senses: Passive Perception 14

CR: 5 (XP 1,800; PB +3)

Amphibious.

The sea lion can breathe air and water.

Keen Smell.

The sea lion has advantage on Wisdom (Perception) checks that rely on smell.

Pack Tactics.

The sea lion has advantage on an attack roll against a creature if at least one of the sea lion's allies is within 5 feet of the creature and the ally isn't incapacitated.

Swimming Leap.

With a 10-foot swimming start, the sea lion can long jump out of or across the water up to 25 feet.

Actions

Multiattack.

The sea lion makes three attacks: one bite attack and two claw attacks.

Bite.

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) piercing damage.

Claw.

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) piercing damage.

Find this creature in the encounter builder

Source: Tales from the Yawning Portal, p. 242 - Licenses and attribution