Seaflower was one of my favorites when I was young! Since I was in the MLP target audience before I could read and didn't know about the other pony with that name, mine was called Seashell. She was a he in my games and was married to Beachball and the father of Baby Rainribbon, named Baby Rainbow in my herd. Mine had a mark over her eyes like an eyebrow, which I think is why I decided that pony was a boy.
I actually have two Seaflowers! One is my childhood one and the other I bought as a replacement when I thought I had lost that one. I was so dissapointed to think I'd lost Seaflower, but so happy to find him in a different box than I expected when looking for something else!