Spawn & Sacs
Plesiosaurus Sac
Plesiosaurus egg sac
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In 7.3 only, any mobs that are purely aquatic (so, excluding the semi-aquatic spinosaurus and sarcosuchus) hatch from either spawn eggs or egg sacs. They do not function like non-avian eggs because they don't have a model or a waiting period, and they also do not function like avian eggs because they can't be thrown. They will also always hatch when right-clicked into water of sufficient area for the creature.


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Mosasaurus DNA


Mosasaurus Sac

Spawn and Sacs all follow the same creation process as the eggs. DNA must be put in a culture vat to produce a sac or spawn, giving the player the achievement "What Species is this?". The sac or spawn will always match the species of the DNA cultivated. The cultivation process can sometimes fail, producing a failuresaurus and not an spawn or sac. When a male and female plesiosaurus, mosasaurus, or liopleurodon breed, they will drop an amniotic sac item that will not hatch unless used by a player. Fish and nautilus will occasionally drop spawn without mating (since they do not have genders), which also do not hatch unless used by a player.

Spawn/sacs can also be analyzed to revert them back into their DNA forms.

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Mosasaurus Sac

Mosasaurus DNA


Birdegg Avian EggsBioGoo Bio-GooDinoegg Non-Avian EggsDna DNASyringe EmbryoPalm sapling Palaeoraphe Sapling
(Palae Fossil Petrified) ■ Seeds Seeds & Spores (Fossilseeds Fossilized) ■ Bigsack Spawn & Sacs


Amber AmberGrid Arm Bone Arm BoneBioFossil Bio-Fossil (Tar fossil Tar) (Plant fossil Plant) ■ Amber Dominican Amber
Emptyshell Empty f6gL2o Foot BoneIced Meat Frozen MeatSarcosuchus legBone Leg BoneMagic Conch Magic Conch
Skulls SkullGrid Ribcage (Bone) Rib CageUnique Unique BonesBucket tar Tar Bucket (Tardrop Drop) ■ Grid Vertebrae Vertebrae


Ancient key Ancient KeyGrid Ancient Helmet Ancient Helmet (Grid Broken Ancient Helmet Broken) ■ Grid Ancient Sword Ancient Sword (Grid Broken Ancient Sword Broken) ■
Record Fossil RecordPotteryShard Pottery ShardScarab Gem Scarab Gem (Scarab blue Aquatic) ■ Stone tableeeeet Stone Tablet
(Relic Scrap Scrap)


Essence Of Chicken Chicken EssenceCooked egg Cooked EggFlesh Failuresaurus Flesh
Meat Raw Animal Meat (Cooked Cooked) ■ Stunted essence Poisonous Potato EssenceRaw Chicken Soup Raw Chicken Soup (Cooked Chicken Soup Cooked) ■ Sio Chiu Le2 Sio-Chiu-Le


Ancient clock Ancient ClockDinopedia DinoPediaGrid Javelins JavelinGem Axe Scarab AxeGem Hoe Scarab Hoe
Gem Pickaxe Scarab PickaxeGem Shovel Scarab ShovelGem Sword Scarab SwordArmour Skull Armor
Skull Stick Skull StickSpawnegg Spawn EggsGrid Tooth dagger Tooth DaggerWhip Whip


Grid Live Coelacanth Live Coelacanth (Grid Live Alligator Gar Live Alligator Gar) (Nautilus (1) Live Nautilus) (Grid Live Sturgeon Live Sturgeon) ■
Ball Toy BallToy tethered log Tethered LogToy scratching post Scratching Post

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