vesiset

Could you clarify what "vesiset" refers to? It isn’t a widely recognized English term, and it could be a Finnish word, a place name, a group, a concept in ecology, or a fictional element. Please indicate the intended meaning or context (for example, real-world term, geographic location, cultural group, or a fictional universe). Once I have that, I can write a concise, neutral, wiki-style article under 300 words.