Blood Frenzy. The shark has advantage on melee attack rolls against any creature that doesn't have all its hit points.
Water Breathing. The shark can breathe only underwater.
Pack Leader. The shark gives advantage on attack rolls to all allied creatures within ten feet.
Ice Breaker.The arctic shark is immune to cold damage and all nonmagical and magical physical damage dealt via ice and snow based attacks. Any ice that comes into contact the shark's skin shatters on impact.
Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage.
Description
Smaller than a giant shark but larger and fiercer than a reef shark, an arctic shark haunts deep waters. It usually hunts with small groups of other sharks forcing them to help it take prey more quickly, however, Arctic sharks themselves tend not to hunt together and are actually very territorial. A fully grown arctic shark is 15 to 20 feet long. Their time in the cold freezing Arctic temperatures has granted them a magical resistance to cold and ice.