Donut, No Worms

 | Feature | Details | | :--- | :--- | | **Species** | *Raion donut* | | **Attitude** | Passive | | **Type** | Anchored | | **Category** | Raions | | **Biome** | Plateaus |   **Donut, No Worms** is a sessile lifeform.   ## Databank Entry   **Donut of worms** (tentatively *Raion donut*) without visible worms.   1. **Normal state**   Just as terrestrial corals contain photosynthetic partners called zooxanthella, the donut contains a population of predatory worms.   2. **Disturbed state**   Just as terrestrial corals sometimes expel their partners when under stress, this donut raion has discharged or killed its population of worms. (Alternatively, they have left in search of a better host.) This may be a reproductive strategy, a defensive reaction to the worms turning on and feeding upon the sponge, or a response to environmental stress.   **Assessment:** unclear how long the donut can survive without its primary food supply. Terrestrial corals survive only days to weeks after bleaching.   *Source: Scan a Donut, No Worms*   ## Gallery   ![The two Donut Raion (Donut, No Worms) in the foreground have removed their population of worms. Behind them are two Donut of Worms.](Donut no Worms.png)