That Green Sea Spirit Reef is already the sacred site of the Merfolk, and no one can enter it casually.
Their uniqueness lies in the fact that every month they shed their original shell, using it as coral to pile up, and then gradually expand outward, endlessly.
What's more interesting is that these coral worms are actually a male and a female, but they only produce offspring once in their lifetime, and their only goal besides that is to build their own coral colony.
The coral colony they build does not have specific medicinal effectiveness, but it can purify seawater, and the accumulated sea sand in the coral colony will gradually transform into "Green Sea Spirit Sand," a type of spiritual material.
As their coral colonies grow larger, the ability to purify seawater will become increasingly powerful, and the quantity and quality of the Green Sea Spirit Sand produced will also increase.
It's considered as the most basic spirit beast for building Sea Spirit Land.
