Paleo Dive

1. 
   The First Plunge

   Dive into the Lagoon for the first time.
   96%
2. 
   Cambrian Curator

   Collect every artifact in the Lagoon.
   42%
3. 
   Cambrian in Focus

   Photograph every creature in the Lagoon.
   22%
4. 
   Reef Restorer

   Collect everything hidden in the Coral Reef.
   3.0%
5. 
   Reef in the Spotlight

   Photograph every creature in the Coral Reef.
   7.2%
6. 
   Guardian of the Kelp Forest

   Track down every collectible in the Kelp Forest.
   0.0%
7. 
   Portraits in the Kelp

   Photograph every creature in the Kelp Forest.
   1.2%
8. 
   Treasures of the Deep

   Recover every artifact from the Deep Sea.
   0.0%
9. 
   Lights, Camera, Deep Sea!

   Photograph every creature in the Deep Sea.
   0.0%
10. 
    Nothing Stays Hidden

    Collect even the final secret of the Abyss.
    0.0%
11. 
    Faces of the Abyss

    Photograph every creature in the Abyss.
    0.0%
12. 
    Hunter of the Cambrian

    Capture Anomalocaris on camera.
    49%
13. 
    Say Cheese, Halisaurus!

    Photograph the agile Halisaurus.
    19%
14. 
    Crow Shark on Camera

    Dare to photograph Squalicorax.
    6.0%
15. 
    Apex in the Viewfinder

    Point your camera at Mosasaurus—and survive.
    0.6%
16. 
    Gonna Need a Bigger Lens

    Photograph the legendary Megalodon.
    0.0%
17. 
    A Whale with Bite

    Capture Livyatan in a photograph.
    1.8%
18. 
    Just a Scratch

    Survive your first creature bite.
    16%
19. 
    Part of the Food Chain

    Get eaten by a marine predator for the first time.
    4.2%
20. 
    Out of Breath

    Drown for the first time during an expedition.
    21%
21. 
    Five Seconds of Eternity

    Drop below five seconds of oxygen and return to the surface alive.
    8.4%
22. 
    Brachauchenius Snack

    Let Brachauchenius find out what divers taste like.
    4.8%
23. 
    Out of the Way!

    Give a creature a mighty shove.
    67%
24. 
    The Abyss Breathes BackSecret

    Steam withholds the description of a secret achievement.
    0.0%
25. 
    Ruler of the Primeval Seas

    Collect everything and photograph every creature on every map.
    0.0%
26. 
    Pressure-Proof

    Survive 15 minutes in a single expedition without dying.
    22%
27. 
    Depth Rush

    Stay alive for 30 minutes on a dive map.
    0.6%
28. 
    Let There Be Light

    Unlock the flashlight module.
    23%
29. 
    Lost and Found

    Unlock the finder—no fossil stays lost for long.
    17%
30. 
    Breath to Spare

    Unlock the additional oxygen tank.
    2.4%
31. 
    Full Speed Ahead

    Upgrade your swim power to the maximum level.
    1.8%
32. 
    Master of the Glide

    Max out your glide duration.
    1.8%
33. 
    Down to the Millimeter

    Max out your drift precision.
    1.8%
34. 
    Lungs of Steel

    Max out your oxygen capacity.
    2.4%
35. 
    Moon over the Cambrian

    Explore the Lagoon at night for the first time.
    33%
36. 
    Reef After Midnight

    Dive into the Coral Reef at night for the first time.
    4.2%
37. 
    When the Kelp Whispers

    Enter the Kelp Forest at night for the first time.
    1.2%
38. 
    Night Shift in the Deep

    Explore the Deep Sea in night mode for the first time.
    0.6%
39. 
    Darker Than Dark

    Take your first nighttime dive into the Abyss.
    1.8%
40. 
    First Sample

    Successfully complete your first DNA scan.
    42%
41. 
    Double Helix

    Complete the required DNA scans for one species.
    42%
42. 
    Sample Run

    Successfully scan three different species during a single expedition.
    27%
43. 
    Field Geneticist

    Complete the DNA research for every species on one map.
    8.4%
44. 
    Code of Life

    Complete the DNA research for every species across all five maps.
    0.0%
45. 
    Cambrian Conservatory

    Fully research and release every Lagoon species into the aquarium.
    6.0%
46. 
    Reef Refuge

    Fully research and release every Coral Reef species into the aquarium.
    4.2%
47. 
    Kelp Keepers

    Fully research and release every Kelp Forest species into the aquarium.
    0.6%
48. 
    Deep-Sea Sanctuary

    Fully research and release every Deep Sea species into the aquarium.
    0.0%
49. 
    Abyssal Ark

    Fully research and release every Abyss species into the aquarium.
    0.0%
50. 
    Always Come Back

    Return alive to Base from each of the five dive maps.
    0.0%
51. 
    CheaterSecret

    Steam withholds the description of a secret achievement.
    8.4%

Names, descriptions and icons are the game’s own, as Steam publishes them; the share is how many owners have unlocked each, from Steam's global figures for 51 of them.