A marimo is a rare growth form of the species where the algae grow into large green balls with a velvety appearance. Colonies of such balls are only known to form in Iceland, Scotland, Japan, Estonia, and now Australia. The round shape of the marimo is maintained by gentle wave action that occasionally turns it. The balls are green all the way round which guarantees that they can photosynthesize no matter which side is turned upwards. Marimo grow in tap water at room temperature as long as the water is changed every one or two weeks (more frequently in summer and less often in winter). The cap unscrews to easily change the water. They prefer cooler water and a shady spot. Direct sunlight is not recommended. You will receive the following with your purchase: 1- marimo moss ball 1- dried sea fan 1- 2 x 3 bag of blue rocks 1- glass light bulb shaped glass with twist top opening measuring 2.5"" x 4"" tall 1- assembly guide and care sheet GIVING THIS ITEM AS A GIFT? Leave a note in the checkout notes section to have it printed on a gift receipt.