Numulite

Numulite is a form of currency used on Fossil Island at the Museum Camp. At the bank on Fossil island is a NPC (Fossil collector) that will buy your found treasures, he will offer you Numulites, this is one of the many ways to obtain the Numulites.

In the structure north of the expedition camp on Fossil island, there are large stone chests which can be unlocked with 100 numulites for various rewards.

You can pay the mermaid farmer at the giant seaweed patch 200 numulite to protect your patch.