How to get all the samples from The Marrows for the Scientist in Dredge: The Iron Rig

After you’ve brought a few Ironhaven Crates to the oil rig in Dredge: The Iron Rig, you’ll start to see the fruits of your labor. The rig’s colossal drill will descend into the sea and break through the bedrock at the bottom, creating a huge fissure that spreads throughout the world.

As the fissure spreads, it causes thick, black ooze to rise up from somewhere deep below. You’d think this was the oil the rig was after, but it doesn’t quite seem like that’s what Ironhaven is looking for. The Scientist is intrigued by this development and will task you with heading out to The Marrows, the first location you explored in Dredge, to see what new fish have appeared now the fissure has stirred things up a bit.

How to get all the samples from The Marrows for the Scientist in Dredge: The Iron Rig

Getting all the samples from The Marrows for the Scientist in Dredge: The Iron Rig is fairly easy once you know what’s required of you. Instead of simply sailing back to this familiar location and fishing in the new spots that have appeared around the black contaminant, you’ve got to use some new equipment.

When you accepted this Pursuit from the Scientist, he should have given you a new rod that he says was crafted by the rig’s Factory. This is the Infused Rod, and it has improved Coastal and Shallow fishing capabilities. All the rods you get from the rig have improved your fishing abilities for Dredge‘s various biomes, so you’ll need to slowly upgrade your gear as required.

With your Infused Rod installed, sail over to The Marrows and get fishing. There’s no secret to finding all the fish the Scientist needs. Just sail to The Marrows, check all the spots around the location where the black contaminant is bubbling up, and fish in the inky fishing spots there. The fish you’ll need to catch and deliver to the Scientist are as follows.

• Osteostracan
• Tullimonstrum
• Paddlefish
• Sea Cucumber

It took me two trips to catch all of these fish because the Tullimonstrum is so massive. If you’ve upgraded your hull a few times, you should be fine getting all four at once. There’s no time restriction, though, so you can slowly deliver each of these fish as you catch them at your own pace. They’ll stay fresh in the Scientist’s Lab.

After delivering all of the fish to the Scientist, you’ll advance The Iron Rig‘s story. This shows you what happens when the rig crew understands what they’ve inadvertently set in motion, making even more work for you in the process.