Rank upgrades
Tuna to Crab (+150 Shells)
7.00
5.60 USD
Crab to Turtle (+250 Shells)
12.00
9.60 USD
Turtle to Dolphin (+300 Shells)
15.00
12.00 USD
Dolphin to Whale (+450 Shells)
20.00
16.00 USD
Whale to Shark (+250 Shells)
20.00
16.00 USD
Shark to Poseidon
97.99
78.39 USD
