Sea Creatures 4 Cavity Soap Mold This is a new Sea Creatures 4 Cavity Soap Mold for all your soap making projects. There is a crab, dolphin, whale and seahorse. A great mold for your soap making projects - lots of fun too. Be sure and use non-bleeding colorants to achieve the two dimensional effect (ask me how I know this). Dimensions: 2 1/2 - 4"