Always active. 2× yield on the listed resources.
Black Pearls harvesting
ResourceHarvesting

Black Pearls are a rare resource in ARK: Survival Ascended, dropped by deep-sea creatures like Eurypterid, Alpha Mosasaur, Alpha Tusoteuthis, and Ammonite. They're used for crafting Tek-tier structures, Absorbent Substrate, and certain saddles.
Black Pearl yield ranking
Average items per resource node or corpse at the selected settings.
Resource node · Corpse target
Range shows the approximate variation around each simulated average.
Node yields assume the recorded base harvest HP (e.g. 1000 for Redwood trees, 620 for Metal nodes). In-game, trees and rocks whose harvest health scales with their size have per-instance HP that varies with the node's size, so actual yields per node will vary. The values shown represent the average.
Black Pearl harvest multipliers210 creature records. Comparison score = average items per node.
Black Pearl Weight Reduction
These creatures reduce Black Pearl weight when carried in their inventory.
Tamed levels invested in Melee Damage. More melee = more resources per hit. Max 73 levels after taming.
Creature harvesting