[Nickle98499]

Hopefully someone can help me out with this, as I have tried searching for this for a while but can't remember the name of it, or when it came out or anything; I know this also might be a long shot, but I figured if anyone could help me out(since it has to do with transformations) you guys might be able to help.

Here goes: a while back(actually late 2003/early 2004 to be specific) I read a book, which I think was a children's/juvenile/young adult book which featured a plot in which a young girl maybe 13, 14, or 15, or possibly older won a trip and along with her family and I think a friend of hers(who was a guy) traveled to a tropical resort, or maybe it was an island, i'm not sure.

In the midst of the story, the girl meets a Dolphin, who talks, but the Dolphin isn't a Dolphin at all; the Dolphin I think is actually a member of the city of Atlantis which sunk because his race of people were dealing with two races of people from Atlantis who could turn into sharks and barracudas and were trying to I think destroy the race of Dolphins or something.

As it turns out the Dolphin needs the girl's help and takes her with him to Atlantis and as they wait at the gates of the underwater city to enter, the girl is eventually transformed into a Dolphin herself.

Since I gave a few of the particulars of the book, maybe someone can help me with the title and author of the book, as I read once and haven't been able to find it since I read it in 2003; hopefully someone can help me out with this, as I would really like to find the book again.

Also the ending of the book was a bit of a twist, the girl and her family escape the resort, but they end up sailing into the Bermuda Triangle, and the book pretty much ends with them trying to get out of the Triangle; it might have been a Goosebumps style book, but i'm not sure.

There's a possibility it was similar in style to Goosebumps, but i'm not sure, in addition I think in the book the fish and sharks were in a human form and there might be a scene in it where the girl saw one of the residents without his sunglasses on and his eyes blinked like a fish's. Also there's a possiblity that in the book the whole point of her family being on the island was to be a sacrifice to some kind of tiki god or something like that.