I painted the sea with metallic powder colour, and added all kinds of painted sea creatures. The waves in the sea and the beach were piped in white royal icing.
This was a 10" chocolate cake, sandwiched with chocolate buttercream, covered in sugarpaste, presented on a large circular cake board covered in lemon sugarpaste, with a turquiose royal iced 'Happy Birthday' message. To continue the 'sea' theme the edge of the coated board was crimped and royal iced as waves.