Kraken coins are an item that is a reward for several quests and can drop off of a number of mobs in all dungeons up to level 12 (including Aria Reservoir). In addition to Kraken Coins there are Counterfeit Kraken Coins.
In Aria Reservoir there is a Dark Angel Statue (#4) that requires 1-2 Kraken Coins to activate. Porkuls only require 1 Kraken Coin to activate. All other races need 2.
Obtained From Edit
Sells to vendor for 1,000g