Here is the full list of all 30 Aquamariner achievements.
Complete the tutorial
Win your first race
Win all 5 races
Repaint your boat
Explore all biomes
Recover 10 lobster pots
Recover 25 lobster pots
Drive for 100km
Buy all boat upgrades
Buy all gear upgrades
Repair the full town
Play for 4 hours
Make 5000 selling fish
Make 10000 selling fish
Complete your first bounty
Complete 10 bounties
Fishipedia - 15 fish
Fishipedia - 30 fish
Fishipedia - 45 fish
Fishipedia - 60 fish
Catch 100 fish
Find the waterfall cave
Collect 1 piece of salvage
Collect 20 pieces of salvage
Collect all salvage
Unlock all lab upgrades
Let 5 fish escape
Use bait 10 times
Paint your boat blue
All achievements unlocked