Armor Class 14 ({@item scale mail|phb})
Hit Points 16 (3d8 + 3)
Speed 30 ft., swim 20 ft.
Saving Throws DEX +2
Skills Athletics +3, Perception +2
Senses darkvision 60 ft., passive Perception 12
Languages Common, Goblin
Challenge 1/2
Amphibious. The koalinth can breathe air and water.
Martial Advantage. Once per turn, the koalinth can deal an extra 7 (2d6) damage to a creature it hits with a weapon attack if that creature is within 5 feet of an ally of the koalinth that isn't incapacitated.
Trident. Melee or Ranged Weapon Attack: +3 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d6 + 1) piercing damage, or 5 (1d8 + 1) piercing damage if used with two hands to make a melee attack.
GoS, p. 239