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sorry i've never heard of it whats it about sweatdrop

It looks nice. What's it about?

ok i did research heres what its about:
Lucia, Mermaid Princess of the North Pacific Ocean, sets out to land to find the boy she saved from a shipwreck seven years ago, the boy to whom she entrusted her pink pearl. She eventually found the boy, named Kaito Domoto. But the human form Lucia assumed, a girl named Lucia Nanami, doesn't have any resemblance to her mermaid form. But she also cannot tell Kaito who she really is; otherwise she would turn into foam. So she tries to convince Kaito into figuring out who she really is (since nothing was said about the other way around).

At the same time, Lucia has been told that a group of sea monsters or suiyō (水妖) have invaded the marine world and she had to gather the six other Mermaid Princesses and their pearls to resurrect the legendary goddess Aqua Regina to stop them. So to fulfill this, she joins forces with Hanon and Rina, both Mermaid Princesses who also came up to dry land, use their pearls, turn into singing idols, and use their voices as an offensive.

note: i got the info from http://en.wikipedia.org/wiki/Mermaid_Melody:_Pichi_Pichi_Pitch#Basic_Story

lol i didnt even look at the info, but i have no idea what i would feel about it.

I think so too