Polyps are colonial animals with multiple individual polyps attached to live rock. Their most common color is green, but many are also found in other colors, such as green, Yellow, Orange, Lavender, Tan, White, and some with there inner & outer ring having deferent colors. Some Polyps such as the Zoanthids species can be invasive and aggressive toward surrounding corals. Some polyps have the ability to sting other polyps or corals. So give adequate space between themselves and other corals. They are easy to maintain, making them a good choice for beginner aquarists. They require a high light level along with a medium to high water movement. Polyps such as the Glove Polyp have symbiotic algae zooxanthellae hosted within it provides some of its nutritional requirements from the light process of photosynthesis. You should feed Each individual polyp, micro-plankton, Cyclop-eeze, baby brine shrimp, Mysis Shrimp or foods designed for filter feeding invertebrates. Some of the other Polyps you will find here are Colony Polyp (Undescribed zoanthus), Button Polyp (Protopalythoa sp.), Starburst Polyp (Briareum sp.), Colony Polyp (Zoanthus sp.), Glove Polyp (Clavularia sp.), Waving Hand (Anthelia sp.), Tree Polyp (Acrozoanthus sp.), Thick Stem Waving Hand (Anthelia sp.), Elegant Moon Polyp (Protopalythoa vestitus), Pipe Organ Coral (Tubipora musica), Snake Polyp (Isaurus tuberculatus), and many more.