The Aquarius Expedition, known as Expedition 15 in No Man’s Sky, plunges players into a thrilling aquatic adventure centered around fishing, underwater exploration, and interstellar travel. Launched as a limited-time event, it challenges participants to navigate five distinct phases filled with milestones that reward valuable items, upgrades, and cosmetics. This guide provides a fresh, comprehensive walkthrough to help you finish every objective swiftly and claim all prizes, drawing from proven strategies across multiple reliable sources.
Expedition Overview and Preparation Essentials
Aquarius emphasizes marine life discovery and angling prowess, requiring players to hop between designated rendezvous points while mastering fishing mechanics. The event spans approximately one to two weeks, with progress saved across restarts via the Expedition menu at the Space Anomaly. New players begin on a starter planet equipped with basic gear, but veterans should prepare specific items for efficiency.
- Recommended Starting Inventory: Fishing Rod (auto-provided), Oxygen upgrades if available, extra inventory slots, and bait materials like Mealworms or Lures.
- Key Mechanics: Use the Analysis Visor to scan for rendezvous beacons, deploy Exo-Skiffs for mobility, and experiment with baits for rare catches.
- Pro Tip: Prioritize inventory expansion early, as many milestones grant slots upon completion.
Access the expedition by selecting it from the main menu or Space Anomaly log. Phases unlock sequentially after claiming prior rewards, ensuring a structured progression.
Phase 1: Setting Sail and First Catches
The initial phase introduces core fishing and introduces travel elements. Focus on quick wins to build momentum.
| Milestone | Objective | Rewards | Strategy |
|---|---|---|---|
| Casting Off | Locate your starship | Pre-Packaged Personal Refiner, 3 Starship Launch Fuel | Follow compass icon to ship; enter to complete. |
| Blue Yonder | Launch into space first time | Base Computer plans, Pre-Packaged Hyperdrive | Fuel ship and blast off post-Casting Off. |
| Gone Fishing 1 | Reach first rendezvous | Exo-Skiff plans, Crystal Sulphide | Warp via Galaxy Map; scan planet for beacon. |
| Sun on the Water | Catch 3 diurnal fish | Craftable Components, Radiation Protection | Fish daytime hours with basic bait. |
| Pondskipper | Deploy Exo-Skiff | 5 Mealworms, 5 Spicy Chum, 5 Bionic Lures | Craft and place in water after Gone Fishing 1. |
| Catch of the Day | Cook a fish in Nutrient Processor | Various cooking items | Build processor (2 Metal Plating, 1 Hermetic Seal, 25 Sodium); process any fish. |
Phase 1 wraps up automatically after these, granting a poster reward. Aim to complete in under 30 minutes by multitasking scans and fishing.
Phase 2: Deepening the Dive into Aquatic Challenges
Building on basics, Phase 2 ramps up with environmental fishing and messages from mysterious anglers.
- Gone Fishing 2: Navigate to second rendezvous for 5 inventory slots and 900 Nanites. Use Galaxy Map route.
- Feed Water: Catch 4 uncommon irradiated fish (Banned Hazard Protection, 3 Hypnotic Eyes). Target Irradiated biomes.
- Lazy Fisherman: Deploy automated traps (Trap plans). Set multiple for passive progress.
Players often overlook trap deployment; place them in schools for steady hauls. End by claiming phase rewards like additional bait stocks.
Phase 3: Navigating Deeper Waters and Nighttime Pursuits
This segment tests depth tolerance and time-specific catches amid continued travel.
| Milestone | Objective | Rewards | Strategy |
|---|---|---|---|
| Gone Fishing 3 | Third rendezvous point | 5 Starship slots, 900 Nanites | Standard map and scan method. |
| Tales of the Waves | Dredge angler message | Automated Trap plans, 750 Oxygen | Fish persistently; RNG-based bottle drop. |
| Freediving | Descend 50u underwater | 10 Crystal Sulphide, 15 Glass, 1K Pure Ferrite, Underwater plans | Dive in any deep water body early. |
Combine freediving with exploration; exotic planets yield quicker depths. Night Fishing (3 nocturnal fish: Barnacle plans, 20 Kelp Sacs) slots here too—wait for dusk.
Phase 4: Mastering Extreme Conditions and Treasures
Phase 4 intensifies with biome-specific hauls and pearl hunting.
- Gone Fishing 4: Fourth point (900 Nanites, 7 slots).
- Call of the Water: Another angler message (Aquatic Treasure, 5 Shadow Lures).
- In Hot Water: 7 high-temp fish on Scorched/Volcanic worlds (400 Quicksilver, Fish Pie).
- Pearls of Wisdom: Harvest 15 Living Pearls (Terrifying Sample, 5 Mollusc Flesh). Target open clam shells; recharge shields post-attacks.
- The Lunker: Land 3 enormous fish (Small Aquarium plans, Biological Sample).
Use advanced baits like Shadow Lures for rares. Sell high-quality fish at stations for related milestones.
Phase 5: Legendary Feats and Final Glory
The climax demands precision in abyssal scans and legendaries.
| Milestone | Objective | Rewards | Strategy |
|---|---|---|---|
| Gone Fishing 5 | Final rendezvous | 1,500 Salt, 7 slots | Includes underwater structure interaction. |
| Abyssal Wonder | Scan 100kg+ creature | 5 Hadal Cores, Deadly-Cold Ice Cream | Deep dive on exotic planets for megafauna. |
| Myths of the Deep | Land legendary fish | Terrifying Sample, 2 Old Boots | Multi-bait trials in prime spots. |
| Wading in Again | Catch 100 fish total | 30 Salvaged Data, Trident Key | Passive from prior efforts; traps accelerate. |
| Fresh Sell | Sell fish at station | Cash and progression | Stockpile quality catches. |
Claim the golden Master Angler title and final poster upon phase completion.
All Unlockable Rewards and Their Value
Aquarius offers over 40 milestones yielding practical and cosmetic goodies:
- Inventory Boosts: Up to 30+ slots across exosuit/starship.
- Blueprints: Exo-Skiff, traps, aquariums, underwater bases.
- Consumables: Baits, oxygen, nanites, quicksilver.
- Cosmetics: Posters, titles, unique fish trophies.
- Permanents: Carried to main saves post-expedition.
Total value exceeds standard play, especially for base builders and explorers.
Advanced Strategies for Speedrunners
To blitz Aquarius:
- Planet Selection: Prioritize Exotic or Lush with deep oceans.
- Bait Optimization: Cycle Spicy Chum for hot biomes, Shadow for night/legendaries.
- Multi-Tasking: Fish while scanning; traps for AFK progress.
- Common Pitfalls: Ignore pirates by hiding in Anomaly; stock Sodium for processors.
Full clears achievable in 4-6 hours with practice.
Frequently Asked Questions (FAQs)
Can I complete Aquarius after the event ends?
No, expeditions are time-limited, but rewards transfer to your main save if started during the window.
What if I miss a phase?
Progress saves; restart via menu without penalty.
Best baits for legendaries?
Shadow Lures or Bionic; test on rendezvous planets.
Do traps work passively?
Yes, deploy in schools for steady yields.
Are rewards permanent?
Yes, blueprints and items persist in quicksave.
Post-Expedition: Building Your Aquatic Empire
With rewards in hand, construct underwater bases using new plans. Stock aquariums with rares and integrate fishing into freighter ops. Aquarius enhances endgame viability, blending survival with serene angling. Stay tuned for future expeditions via official No Man’s Sky channels.
References
- No Man’s Sky Expedition 15: Aquarius walkthrough – Destructoid — Destructoid. 2024. https://www.destructoid.com/no-mans-sky-expedition-15-aquarius-walkthrough-how-to-complete-every-milestone-and-phase/
- NMS Aquarius Expedition 15 – All Milestones and Rewards — Gamepressure. 2024. https://www.gamepressure.com/newsroom/nms-aquarius-expedition-15-all-milestones-and-rewards/zd7240
- Expedition 15: Aquarius – No Man’s Sky Wiki — No Man’s Sky Fandom Wiki. 2024. https://nomanssky.fandom.com/wiki/Expedition_15:_Aquarius

