Reefwalker Bark (item)

Reefwalker Bark has a chance to drop from the following coral ancients in Nazjatar:
 * Barnacled Reefwalker
 * Kelpwillow
 * Sunbleached Reefwalker
 * Whitewave Reefwalker
 * Staghorn Reefwalker
 * Deep Reefwalker
 * Murkbloom Reefwalker
 * Seashelf Reefwalker
 * Oronu
 * Urduu
 * Gloomchasm Reefwalker
 * Anemonar
 * Emorneth

Objective of

 * Reefwalker Bark

Criteria of

 * Give Me the Biggest Bag You've Got