To make a model of a coral reef, follow the directions onthis site.
If you are in a hurry, skip the cake completely, and just buy a container of ready made icing, use some small fruit, such as grapes, stick with toothpicks, and coat with icing.
If you are in a hurry, skip the cake completely, and just buy a container of ready made icing, use some small fruit, such as grapes, stick with toothpicks, and coat with icing.