Send 100 gifts to friends.
Fully opened Coral Reef
Make 5 pufferfish puff up simultanously
Scare a seahorse with an Angelfish
Reach Level 10
Form a school of 10 fish
Reach Level 20
Reach Level 30
Fed fish 1,000 times
Release 1,000 fish
Fully discover a set
First set to Thriving
First set to Established
10 Coral Reef sets 'Discovered'
Raise your first species to 'Established'
Raise your first species to 'Thriving'
Get a rare decoration from the crab
Discover 40 Coral Reef set decorations