Bubble Bonds
Bubble Bonds can be found on the reefs around Horse Isle 2. For tools (equipment) you will need an Underwater Helmet, which can be found at Jungle Tool Shop for $1,100,000, in order to enter the reefs.
Ancient Reef North
Ancient Reef South
Frozen Reef
Harbor Reef Center
Harbor Reef North
Seedling Reef North
Seedling Reef South
Shipwreck Reef North
Shipwreck Reef South
Shipwreck Reef West
Sprout Reef East
Sprout Reef West