Sir Hammerlock wants you to find and get some specimens of Moon Threshers, so head to Outlands Canyon. Head to the waypoint and delve into the cave to find the nest. When you get there, some Wormhole Threshers will spawn, so be careful around them, as they can suck you into melee range and impale you with spikes, dealing constant damage.

View Full-size

Try to kill the Wormhole Threshers from a distance, as they suck you in and protrude spikes from their bodies, dealing constant damage.

You’ll need to kill six of these before you move on to the next part, which is Tadpole Threshers. These ones will leap into the air when they burrow underground, usually getting behind you. Kill a few of these and the “hard” part of the mission will begin. Now, you will need to freeze two of these Tadpole Threshers and while they’re frozen, run up to them and interact with them to capture.

If you don’t have a cryo-elemental weapon, there are Cryo plants scattered around the cave, so lure them over to those. Once you manage to capture two Threshers, you will have to bring them to Seymour, who will send them to Hammerlock on Pandora. Go to the waypoint and you’ll have to load both Threshers onto the rocket, then launch the rocket. Collect your reward from Seymour.