Pack Tactics. The shark has advantage on an attack roll against a creature if at least one of the shark's allies is within 5 feet of the creature and the ally isn't incapacitated.
Water Breathing. The shark can breathe only underwater.
Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 14 (3d8 + 2) piercing damage.
Description
Smaller than giant sharks and hunter sharks, reef sharks inhabit shallow waters and coral reefs, gathering in small packs to hunt. A full-grown specimen measures 6 to 10 feet long.
This species were transformed into an aberrant form by the contact with the corrupted blood of a Tarrasque that fought against a stone collossus in the undersea. It has a hard carapace and resistance to some types of damage, as if it were a fiendish shark.