Beast of the Sea

Medium Beast, Neutral

AC: -

Initiative: +2 (12)

HP: 5 plus five times your Ranger level (the beast has a number of Hit Dice [d8s] equal to your Ranger level)

Speed: 5 ft., swim 60 ft.

STR
14 (+2)
DEX
14 (+2)
CON
15 (+2)
INT
8 (-1)
WIS
14 (+2)
CHA
11 (+0)

Senses: Darkvision 90 ft., Passive Perception 12

Languages: understands the languages you know

CR: -

Amphibious.

The beast can breathe air and water.

Primal Bond.

Add your Proficiency Bonus to any ability check or saving throw the beast makes.

Actions

Beast's Strike.

Melee Attack Roll: Bonus equals your spell attack modifier, reach 5 ft. Hit: 1d6 + 2 plus your Wisdom modifier Bludgeoning or Piercing damage (your choice when you summon the beast), and the target has the Grappled condition (escape DC equals your spell save DC).

Find this creature in the encounter builder

Beast of the Sea

Source: Player's Handbook (2024), p. 124 - Licenses and attribution