Create a fantastic aquarium landscape full of movement, fun and vibrant coloration. Sporn Aquatic Creations' Caulerpa Seaweed aquarium decoration features super flexible construction to achieve realistic movement. Each seaweed blade is fitted with a float at the tip so it drifts and sways in the aquarium water current. Place it under actinic aquarium lighting for amazing nighttime enjoyment of your aquarium. Weighted resin rock base allows drift-free placement. Suitable for use in freshwater or saltwater aquariums.