I would have put skewers into the side of the dolphin that faces the cake and attached it to the cake that way.
You could also have built a candy melt wave to hold the dolphin upright; sort of make him surf up the side of the wave.
You could have sliced off his head and made it look like he was diving into the water of the layer below.
thanks for the suggestions!
I thought about skewers a little too late. My "rookiness" is showing.
This is a hobby where you definitely learn something new every day!
It's never too late to put skewers into a chocolate piece. Heat the tip of a metal skewer over a gas flame and use it to poke a hole into the chocolate. You will probably have to to do this more than once. You don't want to force it or the piece may break. Once inserted, the surrounding melted chocolate will hold the skewer in place. You can use a lighter if you don't have a gas stove.
Thanks! I have bamboo skewers. no metal ones. guess the idea is to transfer the weight with a long skewer.