There are 15 candles on this monster (which was about 3 1/2 ft long) 5 for Cyan and 10 for Alex. I thought it turned out really well. The instructions I ended up finding were here:
Here are the invitations to that same party. I made port holes out of CD envelopes. They were SO super cute! They didn't go through the mail well for anyone who is searching for ideas for a 'under the sea' birthday party. But they would be great hand delivered, or perhaps stuck in another envelope for easy shipping. They are just sea landscapes, made out of puff paint, stickers, and glitter glue with sand, and then printed on the back with the invite information. I believe (as do my friends who are also crazy about parties like me) that the invitation sets the whole mood for the party. Weeks before hand, when a child opens a birthday invite, they see what lies ahead, and from that second... the party's on!