In Subnautica Fragments are broken pieces of advanced technology that can be analysed by the Scanner to create Blueprints. You will be able to find Fragments scattered throughout the various biomes and the Degasi Seabases and once you have collected the required number of a particular fragment you will acquire the corresponding blueprint. Once you have the blueprint scanning a Fragment will convert it into two pieces of Titanium.
Below is a list of the various Fragments and where you can find them.
Enameled Glass
Found: Cyclops Blueprint, Observatory Blueprint.
Tab: Basic Materials
Fiber Mesh
Found: Creepvine Sample
Tab: Basic Materials
Lubricant
Found: Creepvine Seed Cluster
Tab: Basic Materials
Plasteel Ingot
Found: Cyclops Blueprint, Observatory Blueprint, Prawn Suit Blueprint.
Tab: Basic Materials
Aerogel
Found: Gel Sack
Tab: Advanced Materials
Benzene
Found: Blood Oil
Tab: Advanced Materials
Hydrochloric Acid
Found: Deep Shroom
Tab: Advanced Materials
Polyaniline
Found: Deep Shroom
Tab: Advanced Materials
Synthetic Fibers
Found: Blood Oil
Tab: Advanced Materials
Cyclops Bridge
Found: Fragments
Tab: Cyclops
Cyclops Hull
Found: Fragments
Tab: Cyclops
Cyclops Engine
Found: Fragments
Tab: Cyclops
Beacon
Found: Fragments
Tab: Deployables
Grav Trap
Found: Fragments
Tab: Deployables
Mobile Vehicle Bay
Found: Fragments
Tab: Deployables
Seaglide
Found: Fragments
Tab: Deployables
Power Cell
Found: Battery
Tab: Electronics
Advanced Wiring Kit
Found: Computer Chip
Tab: Electronics
Compass
Found: Data Boxes
Tab: Equipment
High Capacity O2 Tank
Found: Standard O2 Tank
Tab: Equipment
Lightweight High Capacity Tank
Found: Modification Station
Tab: Equipment
Radiation Suit
Found: Aurora Explosion
Tab: Equipment
Reinforced Dive Suit
Found: Fragments
Tab: Equipment
Rebreather
Found: Creepvine Sample
Tab: Equipment
Stillsuit
Found: Fragments
Tab: Equipment
Ultra Glide Fins
Found: Modification Station
Tab: Equipment
Ultra High Capacity Tank
Found: Modification Station
Tab: Equipment
Swim Charge Fins
Found: Modification Station
Tab: Equipment
An Unusual Doll
Found: Fragments
Tab: Miscellaneous
Power Transmitter
Found: Fragments
Tab: Exterior Modules
Thermal Plant
Found: Fragments
Tab: Exterior Modules
Exterior Growbed
Found: Fragments
Tab: Exterior Modules
Floodlight
Found: Fragments
Tab: Exterior Modules
Spotlight
Found: Fragments
Tab: Exterior Modules
Interior Growbed
Found: Fragments
Interior Modules
Plant Shelf
Found: Fragments
Tab: Interior Modules
Modification Station
Found: Fragments
Tab: Interior Modules
Composite Plant Pot
Found: Fragments
Tab: Interior Modules
Chic Plant Pot
Found: Fragments
Tab: Interior Modules
Power Cell Charger
Found: Fragments
Tab: Interior Modules
Battery Charger
Found: Fragments
Tab: Interior Modules
Reactor Rod
Found: Nuclear Reactor
Tab: Electronics
Multipurpose Room
Found: Fragments
Tab: Base Pieces
Observatory
Found: Fragments
Tab: Base Pieces
Moonpool
Found: Fragments
Tab: Base Pieces
Scanner Room
Found: Fragments
Tab: Base Pieces
Water Filtration Machine
Found: Fragments
Interior Pieces
Bulkhead
Found: Fragments
Tab: Interior Pieces
Vehicle Upgrade Console
Found: Fragments
Tab: Interior Pieces
Bioreactor
Found: Fragments
Tab: Interior Pieces
Nuclear Reactor
Found: Fragments
Tab: Interior Pieces
Alien Containment
Found: Fragments
Tab: Interior Pieces
Bench
Found: Fragments
Tab: Miscellaneous
Basic Double Bed
Found: Fragments
Tab: Miscellaneous
Quilted Double Bed
Found: Fragments
Tab: Miscellaneous
Narrow Bed
Found: Fragments
Tab: Miscellaneous
Desk
Found: Fragments
Tab: Miscellaneous
Swivel Chair
Found: Fragments
Tab: Miscellaneous
Office Chair
Found: Fragments
Tab: Miscellaneous
Command Chair
Found: Fragments#
Tab: Miscellaneous
Picture Frame
Found: Fragments
Tab: Miscellaneous
Bar Table
Found: Fragments
Tab: Miscellaneous
Trash Can
Found: Fragments
Tab: Miscellaneous
Nuclear Waste Disposal
Found: Fragments
Tab: Miscellaneous
Vending Machine
Found: Fragments
Tab: Miscellaneous
Counter
Found: Fragments
Tab: Miscellaneous
Wall Planter
Found: Fragments
Tab: Miscellaneous
Single Wall Shelf
Found: Fragments
Tab: Miscellaneous
Wall Shelves
Found: Fragments
Tab: Miscellaneous
Scanner Room HUD Chip
Found: Scanner Room
Tab: Scanner Room
Camera Drone
Found: Scanner Room
Tab: Scanner Room
Thermoblade
Found: Modification Station
Tab: Tools
Pathfinder Tool
Found: Creepvine Sample
Tab: Tools
Air Bladder
Found: Bladderfish
Tab: Tools
Laser Cutter
Found: Fragments
Tab: Tools
Stasis Rifle
Found: Fragments
Tab: Tools
Propulsion Cannon
Found: Fragments
Tab: Tools
Repulsion Cannon
Found: Modification Station
Tab: Tools
Light Stick
Found: Fragments
Tab: Tools
Depth Module MK1
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Engine Efficiency Module
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Seamoth Solar Charger
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Storage Module
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Seamoth Perimeter Defense System
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Torpedo System
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Seamoth Sonar
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Hull Reinforcement
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Depth Module MK2
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Depth Module MK3
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Prawn Suit Torpedo Arm
Found: Fragments
Tab: Upgrade Modules
Vortex Torpedo
Found: Fragments
Tab: Upgrade Modules
Prawn Suit Drill Arm
Found: Fragments
Tab: Upgrade Modules
Prawn Suit Propulsion Cannon
Fragments
Tab: Upgrade Modules
Prawn Suit Jump Jet Upgrade
Vehicle Upgrade Console
Tab: Upgrade Modules
Prawn Suit Thermal Reactor
Vehicle Upgrade Console
Tab: Upgrade Modules
Cyclops Depth Module MK1
Fragments
Tab: Upgrade Modules
Cyclops Depth Module MK2
Cyclops
Tab: Upgrade Modules
Cyclops Shield Generator
Found: Cyclops
Tab: Upgrade Modules
Cyclops Sonar Upgrade
Found: Cyclops
Tab: Upgrade Modules
Cyclops Fire Suppression System
Found: Cyclops
Tab: Upgrade Modules
Cyclops Decoy Tube Upgrade
Found: Cyclops
Tab: Upgrade Modules
Cyclops Docking Bay Repair Module
Found: Cyclops
Tab: Upgrade Modules
Scanner Room Range Upgrade
Found: Scanner Room
Tab: Upgrade Modules
Scanner Room Speed Upgrade
Found: Scanner Room
Tab: Upgrade Modules
Vortex Torpedo
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Gas Torpedo
Found: Vehicle Upgrade Console
Tab: Upgrade Modules
Seamoth
Found: Fragments
Tab: Vehicles
Cyclops
Found: Fragments
Tab: Vehicles
Prawn Suit
Found: Fragments
Tab: Vehicles
Filtered Water
Found: Bladderfish
Tab: Water